Answer:
Answer: w is 1.6 or. -5.6
Step-by-step explanation:
• I guess the question asks to find the value of w
\({ \rm{3w + {w}^{2} + 1 = 10 - w }}\)
• arrange the equation in a quadratic equation format. i.e; ax² + bx + c = 0
\({ \rm{ {w}^{2} + (3w + w) + 1 - 10 = 0 }} \\ \\ { \rm{ {w}^{2} + 4w - 9 = 0 }}\)
• let's solve the equation using the quadratic formular
\( \hookrightarrow \: { \tt{w = \frac{ - b \pm \sqrt{ {b}^{2} - 4ac} }{2a} }} \\ \)
a is 1b is 4c is -9• Substitute following the mathematical operation rules:
\({ \rm{w = \frac{ - 4 \pm \sqrt{ {4}^{2} - (4 \times 1 \times - 9) } }{(2 \times 1)} }} \\ \\ { \rm{w = \frac{ - 4 \pm \sqrt{52} }{2} }}\)
• split the result:
\({ \rm{either \: \{w = \frac{ - 4 + \sqrt{52} }{2} \} \: \: or \: \: \{w = \frac{ - 4 - \sqrt{52} }{2} \} }} \\ \\ { \rm{either \: \{w = 1.6 \} \: \: or \: \: \{w = - 5.6 \}}}\)
PLEASE HELP
The front of a sculpture is symmetric about the y-axis. Point A is located at (−3, 0), and AC is the longest side of △ ABC. The perimeter of △ABC is 16. What is the value of a?
Answer:
1124
Step-by-step explanation:
1323
The area of the triangle △ABC is 12 square units.
The question is incomplete. The actual question is
Triangle ABC is symmetric about the y-axis. Point A is located at (-3,0), and AB is the longest side of ABC. If the perimeter of ABC is 16, what is the area?
What is symmetry?Symmetrical forms or figures are things that can have a line drawn through them so that the representations on both sides of the line mirror each other.
How to solve the problem?As could be seen in the figure the triangle △ABC is symmetric along the y-axis. Hence, the side AC and BC must be of the same length let us call it 'a'. Also, the coordinate of B must be (3,0) because (3,0) is the reflection of (-3,0) corresponding to the y-axis.
And, the length of AB=6 units because the distance between (-3,0) and (3,0) is 6 units.
Now, the perimeter of the triangle is 16 units. Therefore,
2a+6=16
⇒a=(16-6)/2
⇒a=5 units.
Hence, we have an isosceles triangle △ABC we can find the height 'h' of the triangle using the Pythagoras theorem. Consider the triangle △ACE
then we have that
the height of the right triangle △ACE= h
the base of the right triangle △ACE= 3 units
the hypotenuse of the right triangle △ACE= a = 5 units.
Hence, by Pythagoras' theorem
h²+3²=5²
⇒h²=25-9=16
⇒h=4 (we choose the positive value of h because length is always positive)
Hence, the area of the triangle △ABC is
(1/2)×base×height
=(1/2)×AB×CE
=(1/2)×6×4 unit²
=12 unit²
Hence, the area of the triangle △ABC is 12 square units.
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Mario writes the equation (x+y)2=z2+4(12xy)(x+y)2=z2+4(12xy) to begin a proof of the Pythagorean theorem.
Use the drop-down menus to explain why this is a true equation.
Answer:
Step-by-step explanation:
( x + y ^)2 finds the area of the outer square by squaring its side length.
z² + 4( 1/2xy ) finds the area of the outer square by adding the area of the inner square and the four triangles.
Answer:
1) (x+y)^2
2) z^2+4(1/2xy)
Step-by-step explanation:
( x + y )^2 finds the area of the outer square by squaring its side length.
z² + 4( 1/2xy ) finds the area of the outer square by adding the area of the inner square and the four triangles.
please answer math question
Answer:
2 is the answer
Step-by-step explanation:
The answer will probably be:
20-(-2)^2 = 16
6-(-2)= 8
So 16/8 =2
And therefore 2 is the answer
How do you calculate energy consumption with example?
Energy consumption is the amount of power used over time, measured in watt-hours (Wh) or kilowatt-hours (kWh). It is calculated by multiplying the power (measured in watts) by the time for which it is used.
To calculate energy consumption, you will need to know the amount of power being used and the time over which it is being used. Power is typically measured in watts (W), and energy is the product of power and time, so energy consumption is the number of watts used multiplied by the number of hours for which they are used.
For example, let's say you want to calculate the energy consumption of a light bulb that uses 60 W of power and is left on for 4 hours. The energy consumption would be:
Energy consumption = 60 W * 4 hours = 240 Wh (watt-hours)
This is the amount of energy that the light bulb used over the 4-hour period.
You can also convert watt-hours to other units of energy, such as kilowatt-hours (kWh). To do this, you would divide the watt-hours by 1,000. In the example above, the energy consumption would be 0.240 kWh.
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write the solution set of the given homogeneous system in parametric vector form. 2x1 + 2x2 + 4x3 = 0
-4x1 – 4x2 – 8x3 = 0
-3x2 – 9x3 = 0
[ x1 ]
Where the solution set is x = [ x2 ]
[ x3 ]
X = x3 _____
The solution set can be written in parametric vector form as: \(X = x3 [-1 0 1]^T + x2 [-2 1 0]^T\)
How we get the solution of homogeneous system?We can rewrite the system of equations in matrix form as AX = 0, where \(A =[2 2 4]\\[-4 -4 -8]\\[0 -3 -9]\)
\(X = [x1 x2 x3]^T\)
To solve for the solution set, we can row reduce the augmented matrix \([A|0].\\[2 2 4|0]\\[-4 -4 -8|0]\\[0 -3 -9|0]\)
\(R2 < - R2 + 2R1 and R3 < - R3 - 3R1\) to obtain:\([2 2 4|0]\\[0 0 0|0]\\[0 -3 -9|0]\)
\(R3 < - -1/3 R3\) to obtain:\([2 2 4|0]\\[0 0 0|0]\\[0 1 3|0]\)
\(R1 < - R1 - R2\) to obtain:\([2 2 4|0]\\[0 0 0|0]\\[0 1 3|0]\)
\(R1 < - 1/2 R1 and R2 < - 1/2 R2\) to obtain:\([1 1 2|0]\\[0 0 0|0]\\[0 1 3|0]\)
Therefore, the system has two free variables, x2 and x3, while x1 is a pivot variable. where x2 and x3 are arbitrary constants.
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find the average value of f over the given rectangle. f(x, y) = 5ey x + ey , r = [0, 6] ⨯ [0, 1]
The average value of f over the rectangle [0,6] x [0,1] is approximately 3.427.
The average value of a function f over a rectangle R is given by:
avg(f) = (1/Area(R)) * double integral of f over R
Here, f(x,y) = 5e^(yx) + e^y and R = [0,6] x [0,1]
The area of R is given by:
Area(R) = (6 - 0) * (1 - 0) = 6
So, the average value of f over R is:
avg(f) = (1/6) * double integral of f over R
We can evaluate the double integral using iterated integration. First, we integrate f with respect to y from 0 to 1, and then integrate the result with respect to x from 0 to 6:
integral of f(x,y) dy = integral of (5e^(yx) + e^y) dy
= (5x/2)e^(yx) + e^y + C
where C is the constant of integration.
Now, we integrate this result with respect to x from 0 to 6:
integral of [(5x/2)e^(yx) + e^y] dx = [(5/2) * integral of xe^(yx) dx] + integral of e^y dx
= [(5/2) * (1/y)e^(yx) - (5/2)(1/y^2)(e^(yx) - 1)] + ey + C
where C is another constant of integration.
Therefore, the average value of f over R is:
avg(f) = (1/6) * [(5/2) * (1/y)e^(yx) - (5/2)(1/y^2)(e^(yx) - 1) + ey] evaluated from y=0 to y=1 and x=0 to x=6
avg(f) = (1/6) * [(5/2) * (1/e^6 - 1) - (5/2)(1/e - 1/e^6) + e - 1]
avg(f) = (1/6) * [(5/2) * (1 - e^-6) - (5/2)(e^-1 - e^-6) + e - 1]
avg(f) = (1/6) * [(5/2) * (1 - e^-6 - e^-1 + e^-6) + e - 1]
avg(f) = (1/6) * [(5/2) * (1 - e^-1) + e - 1]
avg(f) ≈ 3.427
Therefore, the average value of f over the rectangle [0,6] x [0,1] is approximately 3.427.
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answer q2-q5 using the following table. source degree of freedom sum of squares mean squares f treatment 3 75.75 q2 q4 error 16 47.2 q3 total 19 2. what is the missing information for q2 in the above table? a. 25.25 b. 2.95 c. 8.5593 d. 0.0013 3. what is the missing information for q3 in the above table? a. 25.25 b. 2.95 c. 8.5593 d. 0.0013 4. what is the missing information for q4 in the above table? a. 25.25 b. 2.95 c. 8.5593 d. 0.0013 5. what is the p-value for the above anova table? a. pf(8.5593, 3,16) b. pf(8.5593,16,3) c. 1- pf(8.5593, 3,16) d. 1- pf(8.5593, 3,19) e. pf(8.5593, 3,19)
The missing information for q2 is the mean squares for treatment, which can be calculated by dividing the sum of squares for treatment. The missing information for q3 is the sum of squares for error.The missing information for q4 is the mean squares for error, which can be calculated by dividing the sum of squares for error.To find the p-value for the above ANOVA table, we need to use the F-distribution with degrees of freedom for treatment and degrees of freedom for error.
Using the given mean squares for treatment (25.25) and mean squares for error (2.95), we can calculate the F-statistic as follows:
F = mean squares for treatment / mean squares for error
F = 25.25 / 2.95
F = 8.5593
The p-value can then be calculated using a one-tailed F-test with alpha level of 0.05:
p-value = pf(F, degrees of freedom for treatment, degrees of freedom for error)
p-value = pf(8.5593, 3, 16)
p-value = 0.0006
Therefore, the answer is A.
Q2: Mean squares (treatment) = Sum of squares (treatment) / Degree of freedom (treatment)
Mean squares (treatment) = 75.75 / 3
Mean squares (treatment) = 25.25
So, the answer for q2 is: a. 25.25
Q3: Mean squares (error) = Sum of squares (error) / Degree of freedom (error)
Mean squares (error) = 47.2 / 16
Mean squares (error) = 2.95
So, the answer for q3 is: b. 2.95
Q4: F-value = Mean squares (treatment) / Mean squares (error)
F-value = 25.25 / 2.95
F-value ≈ 8.5593
So, the answer for q4 is: c. 8.5593
Q5:P-value = 1 - pf(F-value, Degree of freedom (treatment), Degree of freedom (error))
P-value = 1 - pf(8.5593, 3, 16)
So, the answer for question 5 is: c. 1- pf(8.5593, 3, 16)
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Shyryia read a book cover to cover in a single session, at a constant rate. After reading for 1.5 hours, she had 402 out of the total 480 pages left to read. Let y represent the number of pages left to read after x hours.
Complete the equation for the relationship between the number of pages left and number of hours.
Answer:
\(y=-52x+480\)
Step-by-step explanation:
Linear Modeling
Some events can be modeled as linear functions. If there is a situation where a linear model is suitable, then we need two sample points to make the model and predict unknown behaviors.
The linear function can be expressed in the slope-intercept format:
\(y=mx+b\)
The event into consideration is the number of pages of a book left to read by Shyryia.
We know that for x=1.5 hours, she had y=402 out of the total 480 pages left to read. This is the point ( 1.5, 402 ). The other point is not obvious but can be inferred by context. If she hasn't used any time to read (x=0), then she would have y=480 pages left to read. This is the point (0,480).
The equation of a line passing through points (x1,y1) and (x2,y2) can be found as follows:
\(\displaystyle y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)\)
Substituting the given points:
\(\displaystyle y-402=\frac{402-480}{1.5-0}(x-1.5)\)
\(\displaystyle y-402=\frac{-78}{1.5}(x-1.5)\)
Operating:
\(y-402=-52(x-1.5)\)
\(\mathbf{y=-52x+480}\)
Answer:
-52x+480.
Step-by-step explanation:
I took the test, definitely correct
When displaying quantitative data, what is an ogive used to plot? Multiple Choice Frequency or relative frequency of each class against the midpoint of the corresponding class Cumulative frequency or cumulative relative frequency of each class against the upper limit of the corresponding class Frequency or relative frequency of each class against the midpoint of the corresponding class and cumulative frequency or cumulative relative frequency of each class against the upper limit of the corresponding class None of the above
An ogive is used to plot cumulative frequency or cumulative relative frequency of each class against the upper limit of the corresponding class when displaying quantitative data. Option B.
An ogive is a graph that represents a cumulative distribution function (CDF) of a frequency distribution. It shows the cumulative relative frequency or cumulative frequency of each class plotted against the upper limit of the corresponding class. In other words, an ogive can be used to represent data through graphs by plotting the upper limit of each class interval on the x-axis and the cumulative frequency or cumulative relative frequency on the y-axis.
An ogive is used to display the distribution of quantitative data, such as weight, height, or time. It is also useful when analyzing data that is not easily represented by a histogram or a frequency polygon, and when we want to determine the percentile or median of a given set of data. Based on the information given above, option B: "Cumulative frequency or cumulative relative frequency of each class against the upper limit of the corresponding class" is the correct answer.
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A coin weighs 3/4 ounces. Lena picked up 6 of these coins.
What is the total weight of the coins she picked up?
Write your answer in the simplest form.
Answer: 4 1/2 ounces
Step-by-step explanation:
Since there are 6 coins that weigh 3/4 ounces each
we should multiply 3/4 by 6
6 becomes 6/1
then you multiply straight across
6/1 x 3/4 = 18/4
the mixed number of that fraction is 4 and 2/4,
but you can simplify it more to make it 4 and 1/2
the answer is 4 1/2 ounces
Each batch of 24 cookies needs 2.25 cups of flour. If Stacy and her mom bake 3.5 batches, how much flour is
needed?
Show work !
Answer:
7 7/8 cups of flour
Step-by-step explanation:
2.25 times 3.5 equals 7.875
Transitive Property of Segment Congruence.
Given: AB is congruent to JK, JK is congruent to ST.
Prove: AB is congruent to ST
according to the transitive property of congruence, AB and ST are equal to each other, which implies that AB is congruent to ST.
The transitive property is a postulate that can be utilized to determine whether or not a pair of segments are equal to one another. The transitive property of congruence is a term that is frequently utilized in geometry.
This concept may be used to determine whether or not a given segment is equivalent to another segment. If two segments are equal to a third segment, the transitive property states that they are equal to one another.
Let us consider that,AB is congruent to JK, JK is congruent to ST. Therefore, we can say that the transitive property of congruence is being used in this scenario.
Since AB is congruent to JK, it implies that segment AB and segment JK have identical length. Furthermore, since JK and ST are congruent, JK and ST have the same length, which means that the length of JK is the same as that of ST.
Since AB and JK are equal and JK and ST are equal, it implies that AB and ST are equal, according to the transitive property. This implies that segment AB is congruent to segment ST.
The transitive property of congruence is just one of many theorems that can be used to prove that a given segment is congruent to another segment.
This theorem, on the other hand, is often used since it is simple to comprehend and use. In geometry, the transitive property is used to describe the relationship between several congruent parts of a triangle, polygon, or another figure.
Using the transitive property, geometric principles can be proved, and several facets of a problem can be comprehended.
the transitive property of congruence is an important concept in geometry. It helps to determine whether or not two segments are equal to each other.
In this given scenario, AB is congruent to JK, and JK is congruent to ST. Therefore, according to the transitive property of congruence, AB and ST are equal to each other, which implies that AB is congruent to ST.
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What is the area of the puddle on the floor when the employees arrive at work at 7 am? write a composition of functions to help you, and round your answer to the nearest whole number. Explain how you found your answer.
The area of the puddle is 1810 cm^2.
What is an area in math?Area is defined as the total space taken up by a flat (2-D) surface or shape of an object. Take a pencil and draw a square on a piece of paper. It is a 2-D figure. The space the shape takes up on the paper is called its Area.
Why is area calculated?Area is a measure of how much space there is inside a shape. Calculating the area of a shape or surface can be useful in everyday life, for example you may need to know how much paint to buy to cover a wall or how much grass seed you need to sow a lawn.
It had rained for 4 hours with the hole in the roof (from 3am to 7am).
4 hours = 4×60 = 240 minutes.
Thus the radius of the puddle grew to
240×0.1 = 24 cm
therefore the area of the puddle was
pi×r² = pi×24² = 576pi = 1,809.557368... cm² ≈
≈ 1,810 cm²
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Please, Can someone help me, I don't know this one.
tyler can type twice as many words wpm as kyla
define variable=
Expression to represent problem=
if kyla can type 3 wpm how many wpm can Tyler type
Answer:
Your answer is: 6 wpm
Step-by-step explanation:
If Tyler types twice as fast as Kyla, you multiply the amount of wpm Kyla writes by 2. 3 multiplied by 2 equals 6. Therefore, Tyler writes 6 wpm.
If a business had sales of $4,000,000, and a margin of safety of 25%, the break-even point was:
a. $3,000,000
b. $12,000,000
c. $1,000,000
d. $5,000,000
If a business had sales of $4,000,000, and a margin of safety of 25%, the break-even point was is c. $1,000,000.
The margin of safety is the difference between the actual or expected sales and the break-even point. In this case, if the margin of safety is 25%, it means that the business is generating sales that are 25% higher than the break-even point.
To calculate the break-even point, we can use the following formula:
Break-even point = Fixed costs / Contribution margin ratio
The contribution margin ratio is the difference between the sales price and variable costs, divided by the sales price. We don't have enough information to calculate it directly, but we can use the margin of safety to estimate it.
If the margin of safety is 25%, it means that the contribution margin ratio is 25% of the sales price. So, the variable costs must be 75% of the sales price, and the contribution margin ratio is 25%/100% = 0.25.
We know that the sales are $4,000,000, but we don't know the fixed costs. However, we can use the break-even formula to solve for it:
$1,000,000 = Fixed costs / 0.25
Fixed costs = $250,000
Therefore, the break-even point is $250,000 / 0.25 = $1,000,000.
Based on the given information, the break-even point for the business with sales of $4,000,000 and a margin of safety of 25% is $1,000,000.
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Adam the ant starts at $(0,0)$. Each minute, he flips a fair coin. If he flips heads, he moves $1$ unit up; if he flips tails, he moves $1$ unit right. Betty the beetle starts at $(2,4)$. Each minute, she flips a fair coin. If she flips heads, she moves $1$ unit down; if she flips tails, she moves $1$ unit left. If the two start at the same time, what is the probability that they meet while walking on the grid
The probability that Adam and Betty meet at some point is $1-\frac{1}{16}=\boxed{\frac{15}{16}}$.
To find the probability that Adam and Betty meet while walking on the grid, we can consider their paths. Adam will always move up or right, while Betty will always move down or left. This means that their paths will always be perpendicular, and they will only meet if they intersect at some point.
Let's consider the first minute. Adam can either move up or right, and Betty can either move down or left. There are four possible outcomes: Adam moves up and Betty moves down, Adam moves up and Betty moves left, Adam moves right and Betty moves down, or Adam moves right and Betty moves left.
Out of these four outcomes, only one leads to Adam and Betty meeting: if Adam moves right and Betty moves down, they will meet at the point $(1,3)$. So the probability of them meeting in the first minute is $\frac{1}{4}$.
Now let's consider the second minute. Adam will be one unit away from $(1,3)$, and Betty will be one unit away from $(1,3)$. There are four possible outcomes again, but only one leads to them meeting: if Adam moves up and Betty moves down, they will meet at the point $(1,2)$. So the probability of them meeting in the second minute is $\frac{1}{4}$.
We can continue this process for each minute. At each step, there is only one outcome that leads to them meeting, and the probability of that outcome is $\frac{1}{4}$. So the probability of them meeting after $n$ minutes is $\left(\frac{1}{4}\right)^n$.
Now we need to find the probability that they meet at any point in time. We can do this by taking the complement of the probability that they never meet. The only way they will never meet is if their paths never intersect, which means that Adam always stays to the right of Betty or always stays above Betty.
The probability of this happening is the same as the probability that Adam flips tails $4$ times in a row, or Betty flips heads $2$ times in a row. This probability is $\left(\frac{1}{2}\right)^4=\frac{1}{16}$, since there are $2^4$ possible outcomes for Adam and $2^2$ possible outcomes for Betty.
So the probability that Adam and Betty meet at some point is $1-\frac{1}{16}=\boxed{\frac{15}{16}}$.
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Arista opens a savings account with a deposit of r50 000. a year later she deposits another r25 000. another 2 years later she withdraws r10 000. five years after the account was opened, she makes a final deposit of r30 000. the account pays 3.5% p.a. compounded monthly. how much money is is the account immediately after the final deposit of r30 000?
The money is in the account immediately after the final deposit of r30 000 is 107573.
Arista opens a savings account with a deposit of r50 000
principal = 50000
rate of interest = 3.5% componded months
Amount = CI = P(1 + (r/12) )¹²
50000(1 + 0.035/12)¹²
The amount after 1 year is 51778.34
He deposits 25000 now the amount is 51778.34+ 25000 = 76778.34
after 2 years the amount will be
CI = P(1 + (r/12) )²ˣ¹²
76778.34(1 + 0.035)²ˣ¹²
the amount is 82336.64
Now, she withdraws 10000, the amount will be 72336.64
After two years the amount is
CI = P(1 + (r/12) )²ˣ¹²
72336(1 + (0.035/12))²ˣ¹²
77573.04
Now she makes a final deposit of 30000
the amount will be 77573 + 30000 = 107573
Therefore, the money is in the account immediately after the final deposit of r30 000 is 107573.
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b. find the proportion of her laps that are completed between 127 and 130 seconds. c. the fastest 2% of laps are under seconds. d. the middle 70% of her laps are from seconds to seconds.
We find that the proportion of her laps that fall between 127 and 130 seconds is about 0.139. Any lap time under 135.25 seconds would be considered one of the fastest 2% of her laps. The middle 70% of her laps are between 119 and 131 seconds.
To answer your questions, we first need to have some context on what we're dealing with. You mentioned "her laps," so I assume we're talking about a person who is running or swimming laps. We also need to know the distribution of her lap times (i.e., are they normally distributed, skewed, etc.) in order to answer these questions accurately. For now, let's assume that her lap times are normally distributed.
To find the proportion of her laps that are completed between 127 and 130 seconds, we need to calculate the area under the normal distribution curve between those two values. We can do this using a calculator or a statistical software program, but we need to know the mean and standard deviation of her lap times first.
Let's say the mean is 125 seconds and the standard deviation is 5 seconds. Using a standard normal distribution table or calculator, we find that the proportion of her laps that fall between 127 and 130 seconds is about 0.139.
To find the fastest 2% of laps, we need to look at the upper tail of the distribution. Again, we need to know the mean and standard deviation of her lap times to do this accurately. Let's say the mean is still 125 seconds and the standard deviation is 5 seconds. Using a standard normal distribution table or calculator, we find that the z-score corresponding to the 98th percentile (i.e., the fastest 2% of laps) is about 2.05. We can then use the formula z = (x - mu) / sigma to find that x = z * sigma + mu, where x is the lap time we're looking for. Plugging in the numbers, we get x = 2.05 * 5 + 125 = 135.25 seconds.
Therefore, any lap time under 135.25 seconds would be considered one of the fastest 2% of her laps.
Finally, to find the middle 70% of her laps, we need to look at the area under the normal distribution curve between two values, just like in part However, we need to find the values that correspond to the 15th and 85th percentiles, since those are the cutoffs for the middle 70%. Using the same mean and standard deviation as before, we can use a standard normal distribution table or calculator to find that the z-scores corresponding to the 15th and 85th percentiles are -1.04 and 1.04, respectively.
We can find that the lap times corresponding to those z-scores are 119 seconds and 131 seconds, respectively. Therefore, the middle 70% of her laps are between 119 and 131 seconds.
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Determine whether the equation has One Solution, No Solution, or Infinitely Many Solutions. −3+3x=3x−1−3
Answer:
No solutions (Maybe)
Step-by-step explanation:
If you input 0 into the equation you get -3=-4, which means it has no solutions.
Andre cycled a distance 25km in 150 minutes. What was his average speed (km/h)?
Answer:
10 km/h
Step-by-step explanation:
First, convert 150 minutes to hours:
150/60
= 2.5 hours
Then, to find his speed, divide the km by the number of hours:
25/2.5
= 10 km/h
Answer:
10 km / hr
Step-by-step explanation:
We want to find the average speed in kilometers per hour.
We know that Andre cycled 25 kilometers in 150 minutes.
First, we have the convert 150 minutes to hours.
There are 60 minutes in 1 hour, so we can divide 150 by 60.
150/60= 2.5
Next, find the average speed in kilometers per hour.
Divide the kilometers traveled by the hours.
speed = kilometers / hours
Andre cycled 25 kilometers in 2.5 hours.
speed= 25 km /2.5 hrs
speed = 10 km/hr
Andre’s average speed was 10 kilometers per hour.
In basketball, some baskets are worth two points. Others are worth three points. In one game, the ratio of three-point baskets to three-point tries for one team was3;4 . If the team scored 27 points from three-point baskets, how many three-point tries did the team have?
Answer:
36
Step-by-step explanation:
9 × 4 = 36
*
#17) Michelle has 8 pints of milk. How many quarts of milk does she have?
Answer:
4 quarts
Step-by-step explanation:
1 quart = 2 pints
2 quart = 4 pints
3 quart = 6 pints
4 quarts = 8 pints,
therefore Michelle has 4 quarts of milk
hope i helped you!
21. A tuxedo rental service charges $125 flat fee for a suit, plus $30 more for eachadditional day. Write an equation for this situation where y = total cost and x =additional days.22, What is the total cost for renting a suit after 3 days? (refer to your equation from #21)
The fixed cost for suit is $125 and for every additional day, the cost can be calculated as 30*x.
Therefore, the total cost is the sum of the fixed cost ($125) and the additional cost per additional day ($30x). So, the total cost y is:
y = 125 + 30x
To calculate the total cost after 3 days, we need to replace x by 3 on the initial equation as:
y = 125 + 30*3
y = 125 + 90
y = 215
Answers: 21. y = 125 + 30x
22. $215
Which of these is NOT an assumption underlying independent samples t-tests? a. Independence of observations b. Homogeneity of the population variance c. Normality of the independent variable d. All of these are assumptions underlying independent samples t-tests
The assumption that is NOT underlying independent samples t-tests is: c. Normality of the independent lines variable.
An independent samples t-test is a hypothesis test that compares the means of two unrelated groups to see if there is a significant difference between them. This test is used when we have two separate groups of individuals or objects, and we want to compare their means on a continuous variable. It is also referred to as a two-sample t-test.The underlying assumptions of independent samples t-tests are as follows:1. Independence of observations: The observations in each group must be independent of each other. This means that the scores of one group should not influence the scores of the other group.2.
Homogeneity of the population variance: The variance of scores in each group should be equal. This means that the spread of scores in one group should be the same as the spread of scores in the other group.3. Normality of the dependent variable: The distribution of scores in each group should be normal. This means that the scores in each group should be distributed symmetrically around the mean, with most of the scores falling close to the mean value. The assumption that is NOT underlying independent samples t-tests is normality of the independent variable.
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Find the area of the triangle with the given measurements. Round the solution to the nearest hundredth if necessary.
B = 105°, a = 12 cm, c = 19 cm
The area of a plane shape is the measurement on a 2-dimensional plane. The area of the triangle is 110.124 \(cm^{2}\).
A triangle is a plane shape that has not more than three sides and three angles. The sum of the internal angle of a triangle is \(180^{o}\).
In the given question, the area of the given triangle can be determined by;
Area = \(\frac{1}{2}\) ac SinB
Where: a = 12 cm, c = 19 cm and B = 105°.
Therefore,
Area of the triangle = \(\frac{1}{2}\) x 12 x 19 x Sin 105°
= 6 x 19 x 0.9660
Area of the triangle = 110.124 \(cm^{2}\)
The area of the given triangle is 110.124 \(cm^{2}\).
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What are three examples of parallel?
The three main examples of parallel lines are railway track, sidewalk edges and ladder rails
Given,
Parallel lines;-
Lines that are parallel to one another on a plane do not intersect or meet at any point. They are always equidistant from one another and parallel. Non-intersecting lines are parallel lines. Parallel lines can also be said to meet at infinity.
We have to the examples of parallel lines;
Here,
Examples of parallel lines in real life are railroad tracks, sidewalk edges, ladder rails, endless rail tracks, opposing sides of a ruler, opposite edges of a pen, and eraser
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next solve a similar problem for the case where a and b are independent events (and not mutually exclusive). what is the probability that event a occurs before event b? (note that now we must allow for the possibility that they occur simultaneously, as they are not mutually exclusive).
Since the events are not mutually exclusive, there is a possibility that they occur simultaneously. Therefore, we need to consider this possibility in calculating the probability of event a occurring before event b.
Answer:
Let P(a) and P(b) be the probabilities of event a and event b, respectively. Then, the probability that event a occurs before event b is given by the formula:
P(a before b) = P(a) + P(a and b)/[1 - P(b)]
Here, P(a and b) represents the probability that events a and b occur simultaneously. Since the events are independent, we can calculate this probability as:
P(a and b) = P(a) x P(b)
Substituting this value in the formula, we get:
P(a before b) = P(a) + P(a) x P(b)/[1 - P(b)]
Simplifying this expression, we get:
P(a before b) = P(a) / [1 - P(b)]
This formula gives us the probability that event a occurs before event b, given that a and b are independent events (and not mutually exclusive). We can use this formula to calculate the probability of event a occurring before event b for any given values of P(a) and P(b).
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one a windy moring a hot air balloon starts ascending and flying away from the too of a hill the alritude h(x) in feet of the balloon x hours after starting its ascent can be modeled by the function h (x)= -16x^2 +56x+96. Of factoring to find the roots what would be the GREATEST common factor to pull out to begin??
The greatest common factor of all the coefficients is of 8.
What is the greatest common factor?The greatest common factor between multiple terms is the largest value for which all terms are divisible.
In this problem, the equation is:
\(h(x) = -16x^2 + 56x + 96\)
The terms are 16, 56 and 96. Hence, to find the gcf, we have to keep factoring them by prime factors while all can be factored by the same value, hence:
16 - 56 - 96|2
8 - 28 - 48|2
4 - 14 - 24|2
1 - 7 - 12
There are no terms by which both 7 and 12 are divisible, hence the procedure is stopped and:
gcf(16, 56, 96) = 2³ = 8.
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A producer of inkjet printers is planning to add a new line of printers, and you have been asked to balance the process, given the following task times and precedence relationships. Assume that cycle time is to be the minimum possible.
Task Length
(minutes) Immediate
Predecessor
a 0.2 -
b 0.4 a
c 0.3 -
d 1.3 b, c
e 0.1 -
f 0.8 e
g 0.3 d, f
h 1.2 g
The maximum cycle time is 4.6 minutes.
The rate of output in a 420 minutes workday is 323 units
The daily output is 182 units
What is a Cycle Time?Cycle time is a software statistic used in software engineering to gauge the speed of development in agile software projects. When processing a job, whether it be a client request, an order, or a specific production process stage, the cycle time measures how long it takes.
How to find the idle time %
Idle time/task time * number of WS = 0.6/1.3 * 4 = 0.1154
Multiply by 100
= 11.54%.
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