Answer:
Step-by-step explanation:
Let's use the formula:
distance = rate x time
Let's denote the rate of the cruise boat in still water as "r" and the rate of the current as "c".
When the boat is going downstream, it has the speed of the still water plus the speed of the current. When it is going upstream, its speed is the still water speed minus the current speed.
So, we have two equations based on the distance travelled:
Downstream: 96 = (r + c) x 4
Upstream: 96 = (r - c) x 6
We can solve this system of equations by simplifying the first equation to r + c = 24, and the second equation to r - c = 16.
We can add these two equations to eliminate c and get 2r = 40, so r = 20.
We can then substitute r = 20 into one of the original equations to find c. Let's use r + c = 24, which gives c = 4.
So, the rate of the cruise boat in still water is 20 miles per hour, and the rate of the current is 4 miles per hour.
what is the y coordinate of the point shown in the graph
Answer:
What's the graph?
Step-by-step explanation:
the perimeter of a semicircle protractor is 14.8cm,find it's radius
The radius of the semicircle protractor is approximately 4.693 cm.
Given,Perimeter of a semicircle protractor = 14.8 cm.
To find:The radius of a semicircle protractor.Solution:We know that the perimeter of a semicircle protractor is the sum of the straight edge of a protractor and half of the circumference of the circle whose radius is the radius of the protractor.
Circumference of a circle = 2πrWhere, r is the radius of the circle.If the radius of the semicircle protractor is r, then Perimeter of a semicircle protractor = r + πr [∵ half of the circumference of a circle =\((1/2) × 2πr = πr]14.8 = r + πr14.8 = r(1 + π) r = 14.8 / (1 + π)r ≈ 4.693\) cm.
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PLEASE HELP ME SOMEONE!!!
Use the spinner to find the theoretical probability of the event. Write your answer as a fraction or a percent rounded to the nearest tenth.
The theoretical probability of spinning red is given as follows:
1/3.
How to calculate a probability?The parameters that are needed to calculate a probability are listed as follows:
Number of desired outcomes in the context of a problem or experiment.Number of total outcomes in the context of a problem or experiment.Then the probability is calculated as the division of the number of desired outcomes by the number of total outcomes.
For the spinner in this problem, 2 out of 6 regions are red, hence the theoretical probability is given as follows:
2/6 = 1/3.
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There are 17 black pens and 34 red pens in a bag. If the first pen picked out
is black and is not replaced, what is the probability of the second pen picked
out being red?
2/3
17/25
1/3
17/50
Answer:
17/25
Step-by-step explanation:
If one black pen is removed from the bag, there are 16 black pens and 34 red pens left in the bag, for a total of 50 pens in the bag.
The probability of a red pen being picked out is 34/50, or 17/25
Which of the following sides are congruent?
Answer:
In these two parallelograms, the sides that are same are:
ST = WX
TU = XY
UV = YZ
SV = ZW
Therefore according to the question, the correct option is
d) ST = WX
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Tom has a water tank that holds 5 gallons of water. tell me this is water for my footing to fill six bottles they each holds 16 ounces and a picture that holds one over 2 gallon how many ounces of water left in a water tank?
288 ounces of water are left in the water tank.
What is arithmetic?
Arithmetic is an elementary part of mathematics that consists of the study of the properties of the traditional operations on numbers—addition, subtraction, multiplication, division, exponentiation, and extraction of roots
Here, we have
Given: Tom has a water tank that holds 5 gallons of water. tell me this is water for my footing to fill six bottles they each hold 16 ounces and a picture that holds one over 2 gallons.
1 gallon = 128 ounces, 2 gallon = 256 ounces
6 bottles × 16 ounces = 96 ounces
2 gallon + 96 ounces = 256 + 96 ounces = 352 ounces
5 gallon = 5 × 128 = 640 ounces
= 640 - 352 = 288 ounces
Hence, 288 ounces of water are left in the water tank.
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(02.02 MC)
If trapezoid ABCD was reflected over the y-axis, reflected over the x-axis, and rotated 180°, where would point A′′′ lie?
Trapezoid formed by ordered pairs A at negative 4, 1, B at negative 3, 2, C at negative 1, 2, D at 0, 1.
(1, −1)
(−4, 1)
(1, 1)
(−4, −1)
The location of point A''' after the three transformations would be (-4, 1).
To determine the location of point A''', we need to apply the three transformations (reflection over the y-axis, reflection over the x-axis, and rotation of 180°) to point A.
When a point is reflected over the y-axis, the x-coordinate is negated while the y-coordinate remains the same.
So, the reflection of point A (-4, 1) over the y-axis would be (4, 1).
When a point is reflected over the x-axis, the y-coordinate is negated while the x-coordinate remains the same. So, the reflection of point (4, 1) over the x-axis would be (4, -1).
When a point is rotated 180°, the x-coordinate and y-coordinate are both negated. So, the rotation of point (4, -1) by 180° would be (-4, 1).
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Refer to the number line. Find the coordinate of point W such that the ratio of AW to WF is 1:3
The coordinate of point W should be -4 or point C such that the ratio of AW to WF is 1:3
How to solveGiven data
ratio 1:3
the ratio implies every unit WF is equal to 3 x AW.
hence every unit of AW multiplied by 3 gives WF
using equivalent of fractions in the comparison as follows
1 : 3 = 2 : 6 = 3 : 9
comparing 3 : 9 gives
For point A
Point A = - 7
point A + 3 = -7 + 3 = - 4 = point C
For point F
point F = 5
point F - 9 = 5 - 9 = - 4 = point C
\(\frac{AW}{WF} = \frac{|+3|}{|-9|} = \frac{AC}{FC}\)
Hence the coordinate of point W should be -4 or point C such that the ratio of AW to WF is equal to 1:3
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I’m confused on this question.
Answer:
The second box plot represents the data
Step-by-step explanation:
A box and whisker plot gives you the five-number summary of the data, which includes:
the minimum (lowest value of the data)
the maximum (highest value of the data)
Q1 (25% of the data lies below this point)
Q3 (75% of the data lies below this point), and
the median (the middle of the data).
The two ticks at the far left and far right of the box-and-whisker plot are the minimum and maximum respectively. From the data, we see that the minimum is 5 and the maximum is 10.
Although both plots have a minimum value of 5, only the second plot has the accurate maximum at 10.
What is the result of the mathematical expression below: 2*(4-3)
O 8
O 2
O 0
O 5
A package of 88 batteries costs $ 4 . 724.72 .
What is the cost per battery?
We get that the cost of the battery is $ 8.24 per battery.
We are given that the cost of 88 batteries = $ 724.72
We need to find the cost of one battery.
We will do this by diving the cost of 88 batteries by 88.
Using division, we get that:
cost of one battery = $ 724.72 ÷ 88
Simplifying the expression, we get that:
cost of one battery = $ 8.24 per battery.
Therefore, we get that the cost of the battery is $ 8.24 per battery.
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Which expression represents 3 more than twice a nummer 2+n+3
The expression that represents "3 more than twice a number" is 2n + 3.
The expression "3 more than twice a number" can be translated into an algebraic expression as 2n + 3, where "n" represents the number in question. To understand this expression, we first need to know the order of operations. In this case, "twice a number" means "2n", and "3 more than" means adding 3 to that result. Therefore, the entire expression becomes "2n + 3". It's important to remember that expressions like this are not equations, but rather just a way to represent a mathematical relationship. This type of expression is commonly used in algebraic problem-solving and can be manipulated to solve for different variables.
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Complete question:
Which expression represents "3 more than twice a number"? Choices:
2n−3
3−2n
2n+3
2+n+3
the relation between x^n and n! . Is x^n and n! are equal?you can use taylor series.
The price of an item has risen to $258 today. Yesterday it was $120. Find the percentage increase
Answer
138
Step-by-step explanation:
The answer is 138 because, when you take 258 and subtract it by 120, you will end up with 138!
Answer:
It was most likely raised by 46%
Step-by-step explanation:
120/258
Need help with these plz
Answer:
6. Not so clear
7. 72 degrees
8. 5x + 60 = 180
9. 15 degrees
10. C
Step-by-step explanation:
7. 4x + 12 + 3x + 4 = 121 So this is the equation for the whole angle ADC.
7x + 16 = 121 Collect like terms
7x + 16 - 16 = 121 - 16 Bring 16 to the other side of the equation
7x / 7= 105 / 7
x = 15
After finding the value of x substitute it into the equation for angle ADB thus:
4 ( 15 ) + 12 = 72 DEGREES
8. When those two angles meet they form an angle in a straight line thus they sum to 180 degrees.
9. So we already know of all angles except for 1 which is the one you need to find and what you simply do is:
Add 120 + 30 + 15 = 165
Then subtract 165 from 180 because they are angles in a straight line:
180 - 165 = 15 degrees
10. The answer is C because they are adjacent and they form a perpendicular.
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Determine a definite integral that represents the area of the region in the fourth quadrant enclosed by r = 10 - cos (C). Provide your answer below: de
The definite integral which represents the area of the region in the fourth quadrant enclosed by r = 10 - cos is A = 210π - 80/8
Given:
the area of the region in the fourth quadrant enclosed by r = 10 - cos
we know that:
A = (limit a to b)∫ r²/2 dθ
we know that area of first quadrant = area of fourth quadrant (by symmetry)
A = (limit θ=0 to π/2)∫ (1-cosθ)²/2 dθ
= (limit θ=3π/2 to 2π)∫ (1-cosθ)²/2 dθ
A = 1/2(limit 0 to π/2)∫ (100 - 20cosθ + cos²θ)dθ
A = 1/2 (limit 0 to π/2)∫ (100 - 20cosθ + 1/2 + cos2θ/2)dθ
= 1/2 (limit 0 to π/2) ∫ (201/2 - 20cosθ + cos2θ/2)dθ
= 1/2 ( 201/2 θ- 20sinθ + sin2θ/4) limit π/2 to 0
= 1/2 ( 201π/4 - 20 + 0)
= 1/2 ( 210π - 80/4)
Hence we get the required answer.
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rounding 615×38 to 1 significant figure estimate
Answer:
24,000
Step-by-step explanation:
615 ≈ 600
38 ≈ 40
600 × 40 = 24,000
Therefore, 615 × 38 ≈ 24,000
fraction that is equivalent to 3/9 and has a denominator of 3."
, The fraction equivalent to 3/9 with denominator 3 is the proper fraction p=1/3
What is a fraction in math?A fraction is a part of a whole. In arithmetic, the number is expressed as a quotient, in which the numerator is divided by the denominator. In a simple fraction, both are integers. A complex fraction has a fraction in the numerator or denominator. In a proper fraction, the numerator is less than the denominator.
Given here: The fraction 3/9
Now we can simplify the fraction further by dividing both the numerator and denominator by 3
let p=3/9
then p=3/3 / 9/3
p= 1/3
Hence, The fraction equivalent to 3/9 with denominator 3 is the proper fraction p=1/3
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Which step should be taken to find the quotient of 132.9 ÷ 1,000?
A. Move the decimal point in 132.9 two places to the right.
B. Move the decimal point in 132.9 two places to the left.
C. Move the decimal point in 132.9 three places to the right.
D. Move the decimal point in 132.9 three places to the left.
Answer:
D. Move the decimal point in 132.9 three places to the left.
Step-by-step explanation:
Multiplication of a decimal by the nth power of 10:
We move the decimal point n places to the right.
Division of a decimal by the nth power of 10:
We move the decimal point n places to the left.
In this question:
There is a division by 1000, which is the 3rd power of 10, because \(10^3 = 1000\)
So, we should move the decimal point three places to the left, and the correct answer is given by option D.
F. Why would a linear function describing an investment made at a bank have a minimum
value but no maximum value? Explain your reasoning.
Answer: The function would have a minimum value because the least you will ever have is 0$. It cannot go below 0, so that is the minimum. However, depending on how much time has passed, the maximum amount of money you have can change. It can always go up more, so there is no set maximum.
Step-by-step explanation:
Use the Internet to briefly define each of the following terms and explain how they are examples of annuities.
a) RRSP
A registered investment account, or RRSP, enables you to put money aside for retirement while delaying taxes on investment gains.
What is annuities?An annuity is a financial product that provides regular payments over a specified period of time in exchange for a lump sum of money. It's often used as a retirement income source and comes in different types such as fixed, variable, immediate, and deferred annuities. It's important to understand the terms, fees, and charges before purchasing an annuity.
What is the full form of RRSP?Registered Retirement Savings Plan is the full form of RRSP.
In Canada, both workers and independent contractors can save and invest during their retirement through Registered Retirement Savings Plans (RRSP).
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A total of 50 randomized samples were assigned into 5 different treatment groups in a pharmaceutical science experiment. Each group includes 10 persons (subjects). In order to test if any difference is discernible among these 5 treatments, one-way ANOVA was conducted for the study. Here are data we calculated: Sum of square between group = 232. Sum of square within group = 400.Subject Treatment 1 Treatment 2 Treatment 3 Treatment 4 Treatment 51 2
---
10ANOVA Summary Table
Source Sum of Square Degree of freedom Mean Square F
Between 232
Within 400
Totala. State null hypothesis and alternative hypothesis. b. Calculate the degree of freedom between group, and the degree of freedom within group. c. Mean squares between groups. d. Mean squares within groups.e. F ratiof. If critical value of F is 2.61, should we reject or accept the null hypothesis?g. State your conclusion for this research.
The null hypothesis is that there is no discernible difference among the 5 treatments. The alternative hypothesis is that there is a discernible difference among the 5 treatments
How to calculate the valuesDegree of freedom between groups is nothing but the number of treatments-1 i.e. 5-1=4 and degree of freedom within groups is nothing but total number of subjects- number of treatments i.e. 5*10-5=50-5=45
Mean squares between groups is calculated as follows:
Mean squares between groups= Sum of squares between groups/degrees of freedom between groups= 232/4=58
Mean squares within groups is calculated as follows:
Mean squares within groups= Sum of squares within groups/degrees of freedom within groups= 400/45= 8.89 rounded off to two decimal places
F ratio is calculated as follows:
F= Mean squares between groups/Mean squares within groups
= 58/8.89
= 6.524184477
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You roll a six-sided dice numbered 1-6, and eight sided dice numbered 1-8, and a ten sided dice numbered 1-10. What is the probability of rolling a five on each of the three rolls?
Answer:
1/480
Step-by-step explanation:
for the 6 sided onerolling a 5 is 1/6
for the 8 sided onerolling a 5 is 1/8
for the 10 sided onerolling a 5 is 1/10
total probability= 1/6*1/8*1/10
= 1/480
PLEASE HELP!!!
Triangle ABC has vertices at A(-5,2), B(1,3), and C(-3,0). Determine the coordinates of the vertices for the image of the pre image is translated 4 units right.
A. A’(-9,2),B’(-3,3), C’(-7,0)
B. A’(-4,6),B’(0,7),C’(1,0)
C. A’(-1,2),B’(5,3),C’(1,0)
D. A’ (-5,-2), B’(-1,-1), C’(-3,-4)
The coordinates of the vertices for the image of the pre image is translated 4 units right are: ’(-1, 2), B’(5, 3), and C’(1, 0).
What is translation on a coordinate plane?Translation on the coordinate plane is sliding a point or figure in any direction without any changes in size or shape.
During translation, the coordinates of the vertices of a figure or point change, and they slide left or right, up, or down without changing size or shape.
Given the question above, we need to find the coordinates of the vertices for the image of the pre image that are translated 4 units right.
So,
\(\rightarrow\sf \boxed{\boxed{-5+4=1=\bold{(-1,2)}}}\)
\(\rightarrow\sf \boxed{\boxed{1+4=5=\bold{(5,3)}}}\)
\(\rightarrow\sf \boxed{\boxed{-3+4=1=\bold{(1,0)}}}\)
Thus, the coordinates of the vertices for the image of the pre image is translated 4 units right are: ’(-1, 2), B’(5, 3), and C’(1, 0).
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Find f(-2) for the
piece-wise function.
f(x) =
X
|x+
x+1
if x ≤ 0
if x > 0
f(-2)=[?]
Answer:
The answer is,
f(-2) = -2
Step-by-step explanation:
Since -2 < 0, and f(x) = x for x < 0,
so we get,
f(-2) = -2
14 is 24% of what number? (Write your final answer as a mixed number.)
Answer:
58 1/3
Step-by-step explanation:
14=.24x
14*25/3 = x
58 1/3
PLEASE HELP QUICK!!!!!!!!!!!!
20 POINTS!!!!!
a. The table beside the graph should be completed as follows;
The coordinate of the vertex is (-3, -4).The equation of the axis of symmetry is x = -3.The minimum value is -4.The y-intercept is (0, 4).The x-intercepts are (-5, 0) and (-1, 0).b. The table beside the graph should be completed as follows;
The coordinate of the vertex is (1, 9).The equation of the axis of symmetry is x = 1.The maximum value is 9.The y-intercept is (0, 8).The x-intercepts are (-2, 0) and (4, 0).What is the graph of a quadratic function?In Mathematics and Geometry, the graph of a quadratic function would always form a parabolic curve because it is a u-shaped.
Part a.
Based on the given graph of the first quadratic function, we can logically deduce that it is an upward parabola because the coefficient of x² is positive and the value of "a" is greater than zero (0) and the x-intercept (roots) are (-5, 0) and (-1, 0) while the y-intercept is (0, 4).
Additionally, the vertex is given by the ordered pair (-3, -4) and it has a minimum value of -4.
Part b.
Based on the given graph of the second quadratic function, we can logically deduce that it is a downward parabola because the coefficient of x² is negative and the value of "a" is less than zero (0) and the x-intercept (roots) are (-2, 0) and (4, 0) while the y-intercept is (0, 8).
In conclusion, the vertex is given by the ordered pair (1, 9) and it has a maximum value of 9.
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A researcher wants to test to see if husbands are significantly older than their wives. To do this, he collects the ages of husbands and pairs them with the ages of their respective wives for a random set of married couples. Suppose that data were collected for a random sample of 12 couples, where each difference is calculated by subtracting the age of the wife from the age of the husband. Assume that the ages are normally distributed. The test statistic is t≈1.434, α=0.05, the corresponding rejection region is t>1.796, the null hypothesis is H0:μd=0, and the alternative hypothesis is Ha:μd>0. Which of the following statements are accurate for this hypothesis test in order to evaluate the claim that the true mean difference between the age of the husband and the age of the wife is greater than zero?
Complete Question
The complete is shown on the first uploaded image
Answer:
The correct option are option 2 and option 4
Step-by-step explanation:
From the question we are told that
The sample size is n = 12
The test statistics is \(t \approx 1.434\)
The level of significance is \(\alpha = 0.05\)
The rejection region is t>1.796
The null hypothesis \(H_o: \mu_d=0\)
The alternative hypothesis is \(H_a : \mu_d >0\)
From the given values we see that t < 1.796(i.e 1.434 < 1.796 ) which implies that t is not within the rejection region
Hence we fail to reject the null hypothesis
The conclusion is that there is insufficient evidence to suggest that that the husbands are significantly older than the wife.
Write a system of linear equations that fits the description. Use a graph to justify your answer.
The solution of the system is a point on the line y=-9x+1 .
Graph part optional just need the system.
10*how to make sure you have any questions or concern I am not sure if you have any questions