In a six-sided die, each number has the same probability of being rolled: P = 1/6.
If we roll two dice and we want the result 2 for both dice, each case has a probability of 1/6, so the final probability is:
\(\begin{gathered} P^{\prime}=\frac{1}{6}\cdot\frac{1}{6}\\ \\ P^{\prime}=\frac{1}{36} \end{gathered}\)The price of chocolates increased from $12.99
per pound to $14.99 per pound. What is the
percent
increase? Round to the nearest tenth of
a percent.
Answer:
About 13.3 percent
To find the percent increase divide 12.99 by 14.99 and get .8666577 subtract one to find percent increase and get .13342228 turn into percent and round to the nearest tenths place and get - 13.3 percent.
HELP DUE TODAY!!!
ILL GIVE BRANLIST!!
Answer: a. 1) we can scale a rate by the reciprocal of its 2nd term to find the unit rate..This makes sense as we know with rates we can divide and that dividing is equivalent to multiplying by the reciprocal.
b. 2) To find the unit rate, divide the numerator and denominator of the given rate by the denominator of the given rate.
a. 2) what we need to know to solve the problem is first the given fractions 3/4 and 1/5 and 2/3 and 1/6. and we need to find what we need to do to those which is division.
Step-by-step explanation:
THE WORKING PART.....
Jaylon... 3/4 ÷ 1/5 = 3/4 × 5/1 is equal to 15/4 or 3 /34
Rene... 2/3 ÷ 1/6 = 2/3 6/1 is equal to 4 (A whole number
I REALLLYYY HOPEE THIS HOPES THIS HELPS. and feel free to brainliest. and friend me if you wanna
What is 5 4/5 - 2 2/3 as a fraction? If needed please write as a mixed number
Answer:
2 4/5
Step-by-step explanation:
5 4/5 - 2 3/3=2 4/5
Answer:
47/15 or 3 2/15
Step-by-step explanation:
first put it into improper fraction
so 29/5 minus 8/3
then find the least common denominator which is 15
87/15 minus 40/15 which is 47/15
simplify it
Simplify (2x-3)(5x squared-2x+7)
To simplify the expression (2x-3)(5x^2-2x+7), we can use the distributive property.
First, multiply 2x by each term inside the second parentheses:
2x * 5x^2 = 10x^3
2x * -2x = -4x^2
2x * 7 = 14x
Next, multiply -3 by each term inside the second parentheses:
-3 * 5x^2 = -15x^2
-3 * -2x = 6x
-3 * 7 = -21
Combine all the resulting terms:
10x^3 - 4x^2 + 14x - 15x^2 + 6x - 21
Now, combine like terms:
10x^3 - 19x^2 + 20x - 21
So, the simplified expression is 10x^3 - 19x^2 + 20x - 21.
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This table shows the input and output values for a linear function f(x).
What is the difference of outputs for any two inputs that are one value apart?
−30
−25
1
20
Answer:
-25
Step-by-step explanation:
The following are x-values (inputs) and their y-values (outputs) that are one value apart:
(Input, output)
✅(-2, 20) and (-1, -5)
Difference between their outputs = -5 - 20 = -25
✅(-1, -5) and (0, -30)
Difference between their outputs = -30 -(-5) = -25
✅(0, -30) and (1, -55)
Difference between their outputs = -55 -(-30) = -25
✅(1, -55) and (2, -80)
Difference between their outputs = -80 -(-55) = -25
As we can see the difference of outputs for any two inputs that are one value apart = -25
Answer:
-25
Step-by-step explanation:
How did I get this wrong I need help with this problem ( please show work) P.s I don’t know what’s wrong with the quality
Answer:
a. 0.01%
b. 99.22°F
Explanation:
We know that the temperature follows a normal distribution with a mean of 98.18 °F and a standard deviation of 0.63 °F.
Part a.
If 100.6 °F is the lowest temperature that they consider fewer, we need to calculate the following probability
P( T > 100.6)
To calculate this probability, we first need to standardize 100.6 as follows
\(\begin{gathered} z=\frac{temp\text{ - mean}}{\text{ standard deviation}} \\ \\ z=\frac{100.6-98.18}{0.63}=3.84 \end{gathered}\)Therefore, the probability is equivalent to
P(T > 100.6) = P(Z > 3.84)
Now, we need to use the table for positive z scores, but it gives the probability P (Z < z), so we can calculate P(Z > 3.84) as follows
P(Z > 3.84) = 1 - P(Z < 3.84)
P(Z > 3.84) = 1 - 0.9999
P(Z > 3.84) = 0.0001
Therefore, the percentage is 0.0001 x 100% = 0.01%. So 100.6 °F is appropiate because the probability that a healtly person is considered to have fewer is 0.01%
Part b.
If we want a temperature such that 5.0% exceed it, we need to find a value of z that satisfies
P(Z > z) = 0.05
P(Z < z) = 1 - 0.05
P(Z < z) = 0.95
Using the table, we get that z = 1.645. Then, we can find the temperature as follows
\(\begin{gathered} \text{ temp = z}\cdot\text{ \lparen standard deviation\rparen + mean} \\ \text{ temp = 1.645\lparen0.63\rparen+98.18} \\ \text{ temp = 1.036+98.18} \\ \text{ temp = 99.22 }\degree F \end{gathered}\)Therefore, the answer for part b is 99.22°F
If f(x) = (x+1)^-1 and g(x) = x-2, what is the domain of f(x)/g(x)?
PLS HELP!! Find the equation of a line perpendicular to -2x+y= 9 that passes through the point (6, 2).
Step-by-step explanation:
To find the equation of a line perpendicular to -2x+y= 9, we first need to determine the slope of the given line. We can rewrite -2x+y= 9 in slope-intercept form (y=mx+b) by isolating y:
-2x+y=9
y=2x+9
So the slope of the given line is 2. The slope of any line perpendicular to this line will be the negative reciprocal of this slope, which is -1/2.
Next, we can use the point-slope form of the equation of a line to find the equation of the line that passes through the point (6, 2) with a slope of -1/2:
y - y1 = m(x - x1)
where m is the slope and (x1, y1) is the given point. Plugging in the values, we get:
y - 2 = (-1/2)(x - 6)
Simplifying this equation, we get:
y - 2 = (-1/2)x + 3
y = (-1/2)x + 5
So the equation of the line perpendicular to -2x+y= 9 that passes through the point (6, 2) is y = (-1/2)x + 5.
when an exponential expression is raised to another exponent the exponent is______
Answer:
Step-by-step explanation:
When raising a power to a power in an exponential expression, you find the new power by multiplying the two powers together. For example, in the following expression, x to the power of 3 is being raised to the power of 6, and so you would multiply 3 and 6 to find the new power.
What is the solution to the system of equations
The solution of the given system of equations is (-1, -2).
Explain the method of substitution?Three steps make up the substitution technique: For each of the variables, solve one equation. Put this expression (or plug it in) into the other equation, then solve it. To identify the corresponding variable, rewrite the value's original equation.We are aware that a linear system of equations can be solved using a substitution method.
The intersection of the two lines represents the system's solution.
The given equations are-
y = 3x+1 ...eq 1
y = -2x-4 ...eq 2
Put the value of eq 1 in eq2 .
3x+1 = -2x-4
3x + 2x = -4 - 1
5x = -5
x = -5/5
x = -1
Put the x in eq 1.
y = 3(-1)+1
y = -2
Thus, the solution of the given system of equations is (-1, -2).
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The complete question is-
What is the solution to the system of equations-
y=3x+1 ;
y=-2x-4
Find x. (show work)
What type of triangle is it?
The value of x in chords is 25.857 and this is a isosceles triangle.
Describe Chords?In geometry, a chord is a line segment that connects two points on the circumference of a circle. A chord is the longest distance between two points on a circle, and it passes through the center of the circle. The endpoints of a chord are referred to as its "endpoints." A chord that passes through the center of a circle is called the "diameter" of the circle. The length of a chord can be calculated using the Pythagorean theorem, given the radius and the distance between the center and the chord. Chords are used in various geometric calculations involving circles, such as finding the area of a sector or segment of a circle.
The sum of the angles of a triangle is 180 degrees. In a circle, the angle subtended by an arc at the center of the circle is twice the angle subtended by the same arc at any point on the circumference. Using these facts, we can set up the following equation to find x:
(1/2)(14x - 7) + (1/2)(12x + 4) + (1/2)(4x) = 180
Simplifying and solving for x, we get:
7x - 1 = 180
7x = 181
x = 25.857
Therefore, x is approximately equal to 25.857.
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Find the inverse function of the function f(x)=3x-11f(x)=3x−11.
Answer:
(x+11)/3
Step-by-step explanation:
50 pts. Compute the requested operating costs as indicated, based on the preceding table and the following information.
Car: six-cylinder compact
Year driven: second
Miles driven: 14,000
The insurance cost for second year is $
.
If the answer is right, (I will check it,) then I will post a question and give you more points. just get on my prophile, and keep reloading on my "questions' page. 100 extra points.
DONT FLAG. I NEED HELP WITH THIS PROBLEM AND I"M TRYING TO GET A REAL ANSWER.
From the table , the insurance cost for the second year based on the prescription given is : $1329
Using the prescription table, the six cylinder compact , second year car with a mileage of 14000 falls in the mid table category with the 13000 mileage label .
The operating cost in insurance for the second year is therefore $1329.
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janice wants to book a holiday
the holiday will cost £ 1754
janice will pay a deposit of £350
she will then pay the rest od the cost in 6 equal monthly payments
how much is each monthy paymwnt
Answer: £234
Step-by-step explanation:
First, we need to subtract the deposit (£350) from the total cost of the trip (£1754):
£1754 - £350 = £1404
Then we need to divide the remaining amount of money (£1404) by the number of months Janice will be on holiday (6 months):
£1404 ÷ 6 months = £234 each month
Hope this helps!
a fair die is rolled 100 times.the results are shown below
number:. 1. 2. 3. 4. 5. 6
no of times:. 12. 16. 25. 18. 15. 14
what is the probability of getting
1?
2?
3?
4?
5?
6?
1.) Probability of getting 1: 0.12 or 12%.
2.) Probability of getting 2: 0.16 or 16%.
3.) Probability of getting 3: 0.25 or 25%.
4.) Probability of getting 4: 0.18 or 18%.
5.) Probability of getting 5: 0.15 or 15%.
6.) Probability of getting 6: 0.14 or 14%.
To calculate the probability of getting a specific number on a fair die, we divide the number of times that number appears by the total number of rolls. In this case, the die was rolled 100 times, and the results are given as follows:
Number: 1 2 3 4 5 6
Times: 12 16 25 18 15 14
To find the probability of getting each number, we divide the corresponding number of times by the total number of rolls (100):
Probability of getting 1 = 12 / 100 = 0.12.
Probability of getting 2 = 16 / 100 = 0.16.
Probability of getting 3 = 25 / 100 = 0.25.
Probability of getting 4 = 18 / 100 = 0.18.
Probability of getting 5 = 15 / 100 = 0.15.
Probability of getting 6 = 14 / 100 = 0.14.
Therefore, the probabilities of getting each number on a fair die, based on the given results of 100 rolls, are approximately:
1: 0.12 or 12%,
2: 0.16 or 16%,
3: 0.25 or 25%,
4: 0.18 or 18%,
5: 0.15 or 15%,
6: 0.14 or 14%.
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U have 60 and 9 people to share with how many do everyone get
Answer:
60/9=6.66 everyone get 6.66
Which expression is equivalent to tan2α+1/sec α for all values of α for which tan2α+1/sec α is defined?
Select the correct answer below:
cosα
secα
sec2α
secαtanα
The correct answer is (c) sec^2α.
What is the Pythagorean theorem?
Pythagoras Theorem is the way in which you can find the missing length of a right angled triangle.
The expression tan^2α + 1/secα can be simplified using trigonometric identities. Recall the following trigonometric identities:
tan^2α + 1 = sec^2α (Pythagorean identity for tangent)
secα = 1/cosα (definition of secant)
Substituting these identities into the original expression, we get:
tan^2α + 1/secα = sec^2α + 1/secα
Now, we can combine the terms with a common denominator:
(sec^2α * secα + 1)/secα
Using the definition of secant (secα = 1/cosα), we can further simplify:
(1/cos^2α * 1/cosα + 1)/secα
Multiplying numerator and denominator by cos^3α, we get:
(1 + cosα)/secα
Recalling that secα = 1/cosα, we can replace secα with its definition:
(1 + cosα)/(1/cosα)
Finally, multiplying the numerator and denominator by cosα, we get:
cosα + 1/cosα
Hence, the equivalent expression for tan^2α + 1/secα is cosα + 1/cosα, which is equivalent to sec^2α for all values of α for which secα is defined. Therefore, the correct answer is (c) sec^2α.
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g natasha is in a class of 30 students that selects 4 leaders. How many ways are there to select the 4 leaders so that natasha is one of the leaders
Answer:
3,654 different ways.Step-by-step explanation:
If there are 30 students in a class with natasha in the class and natasha is to select four leaders in the class of which she is already part of the selection, this means there are 3 more leaders needed to be selected among the remaining 29 students (natasha being an exception).
Using the combination formula since we are selecting and combination has to do with selection, If r object are to selected from n pool of objects, this can be done in nCr number of ways.
nCr = n!/(n-r)!r!
Sinca natasha is to select 3 more leaders from the remaining 29students, this can be done in 29C3 number of ways.
29C3 = 29!/(29-3)!3!
29C3 = 29!/(26!)!3!
29C3 = 29*28*27*26!/26!3*2
29C3 = 29*28*27/6
29C3 = 3,654 different ways.
This means that there are 3,654 different ways to select the 4 leaders so that natasha is one of the leaders
what is the value of 2
Does the graph represent a function? Why or why not ?
Answer:
A.
Step-by-step explanation:
The vertical line test is a way of finding out if a relation is a function.
Graph the relation.
Then imagine a vertical line moving from left to right over the graph of the relation.
If the vertical line intersects at most one point of the graph in any position you place the vertical line, then the relation is a function.
This function passes the vertical test since it never intersects more than one point on the vertical line at a time.
Answer: A.
When an object is weighed on a scale, the number displayed may vary from the object’s actual weight by at most 0.4 pounds. The scale says the object weighs 125.8 pounds. Part A: Write an absolute value inequality that describes the range of the actual weight of the object. Use the variable w to represent the actual weight of the object. Part B: Solve the absolute value inequality for w. Express your answer as a compound inequality.
The compound inequality that represents the range of the actual weight of the object is 125.4 ≤ w ≤ 126.2.
Part A: The absolute value inequality that describes the range of the actual weight of the object is:
|w - 125.8| ≤ 0.4
Part B: To solve the absolute value inequality, we can break it down into two separate inequalities:
w - 125.8 ≤ 0.4 and - (w - 125.8) ≤ 0.4
Solving the first inequality:
w - 125.8 ≤ 0.4
Add 125.8 to both sides:
w ≤ 126.2
Solving the second inequality:
-(w - 125.8) ≤ 0.4
Multiply by -1 and distribute the negative sign:
-w + 125.8 ≤ 0.4
Subtract 125.8 from both sides:
-w ≤ -125.4
Divide by -1 (note that the inequality direction flips):
w ≥ 125.4
Combining the solutions, we have:
125.4 ≤ w ≤ 126.2
The object is 125.4 ≤ w ≤ 126.2.
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Which of the following expressions is equivalent to (8x)2/3 ?
a
4 cubic root of x^2
b
Cubic root of 8x^2
c
4x^2/3
d
(8^2/3) (x^2/3)
Answer: C. 4x^2/3 is ur answer
assume that the symbols alpha and beta are labels in a source program. what is the difference between the following two sequences of statement?
The actual difference between the two sequences would depend on the individual statements and their purpose within the source program.
The difference between the two sequences of statements with the symbols alpha and beta lies in the functionality and the way they are executed in a source program.
Sequence 1 (with alpha):
In this sequence, the alpha symbol is used as a label to identify a specific point in the source code.
This label is usually followed by one or more statements that need to be executed when the program reaches this point.
When the program encounters the alpha label, it jumps to that location and executes the statements that follow the label.
This is useful when you want to branch or loop to a specific part of the code.
Sequence 2 (with beta):
In this sequence, the beta symbol is used as a label, just like alpha.
However, the statements following the beta label might be different in terms of functionality, purpose, or the order in which they are executed.
When the program encounters the beta label, it jumps to that location and executes the statements that follow the label, just like it does with alpha.
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A regular polygon is shown with one of its angle measures labeled a.
9 sided regular polygon with one angle labeled a
If m∠a = (3z + 77)°, find the value of z.
z = 72
z = 9
z = 34
z = 21
pls help quick
The values of z in the regular polygon is 21.
What is regular polygon?A regular polygon is a polygon with congruent sides and equal angles.
To calculate the value of z in the regular polygon, we use the formula below.
Formula:
(n-2)180/n = (3z+77)................ Equation 1Where:
n = Number of sides of the polygonFrom the question,
Given:
n = 9Substitute these values into equation 1 and solve for z
(9-2)180/9 = (3z+77)140 = 3z+773z = 140-773z = 63z = 63/3z = 21Hence, the values of z is 21.
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different solution of salt are made up what valumo of
Answer:
Salt is sodium.
Answer:
Salt is Sodium.
Step-by-step explanation:
When you break down the compounds of salt you find molecules of sodium thus saying that salt is made up of sodium molecules.
I need help with this
Answer: 473 square meters
Step-by-step explanation:
Which equation best represents the graph shown below? Explain in detail how you arrived at your answer by stating each of the mathematical transformations necessary to produce the graph.
The equation that best represents the graph shown is y = -2(x - 1)² + 6.
How to explain the graph?It should be noted that l the endpoints are pointing down we know this is a reflection.
If you look at the graph and point (1,6), we can see x has been shifted to the right 1. All the equations have this, which we can see here(x - 1).
The -1 tells the graph to shift 1 spot to the right. Well, if you look at the graph you will notice the maximum point is at (1,6). Notice y = 6. This tells us the graph was shifted up 6 points. To shift up we have to add 6.
That leaves us with our answer which is
y = -2(x - 1)² + 6.
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On the SAT exam a total of 25 minutes is allotted for students to answer 20 math questions without the use of a calculator. A guidance counselor would like to know if the students in his school are prepared to complete this portion of the exam in the timeframe allotted. To investigate, the counselor selects a random sample of 35 students and administers this portion of the test. The students are instructed to turn in their test as soon as they have completed the questions. The mean amount of time taken by the students is 23.5 minutes with a standard deviation of 4.8 minutes. The counselor would like to know if the data provide convincing evidence that the true mean amount of time needed for all students of this school to complete this portion of the test is less than 25 minutes and therefore tests the hypotheses H0: μ = 25 versus Ha: μ < 25, where μ = the true mean amount of time needed by students at this school to complete this portion of the exam. The conditions for inference are met. What are the appropriate test statistic and P-value?
The P-value is between 0.025 and 0.05. and t = -1.85
On the SAT exam a total of 25 minutes is allotted for students to answer 20 math questions without the use of a calculator.
Therefore tests the hypotheses:
\(H_0\) : μ = 25 versus Ha: μ < 25,
where μ = the true mean amount of time needed by students at this school to complete this portion of the exam.
The alternative hypothesis is:
\(H_1:\mu < 25\)
The test statistic is given by:
\(t=\frac{x-\mu}{\frac{s}{\sqrt{n} } }\)
The parameters are:
'x' is the sample mean. \(\mu\) is the value tested at the null hypothesis.s is the standard deviation of the sample.n is the sample size.the values of the parameters are:
x = 23.5 , \(\mu=25\) , s = 4.8, n = 35
Plug all the values in above formula of t- statistic is:
\(t = \frac{23.5-25}{\frac{4.8}{\sqrt{35} } }\)
t = -1.85
Using a t-distribution , with a left-tailed test, as we are testing if the mean is less than a value and 35 - 1 = 34 df, the p-value is of 0.0365.
t = –1.85; the P-value is between 0.025 and 0.05.
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If 7 people equally share one pizza what fraction of the pizza will each person get. A.1/7 b.6/7 c.5/5 d.7/7
what is the volume of the rectangular prism ?
Answer:
180 \(cm^2\)
Step-by-step explanation:
L x W x H
6 x 5 x 6
180
Answer: 180 cubic centimeters
Step-by-step explanation:
Each little blue cube measures 1 cm in each direction - width, height, and depth.
The volume of the whole figure is just the volume of all the little cubes, added up.
The block of cubes is 5 cubes wide and has a depth of 6 cubes. So each horizontal layer is 5 * 6 = 30 cubes, total.
The block of cubes is 6 layers deep, so we have 6 layers of 30 cubes each = 6 * (30 cubes) = 180 cubes in all.
Each cube is 1 cubic centimeter (abbreviated 1 cc), so 180 of them have a combined volume of 180 cc.
A shorter way to say all this is to say that V = width * depth * height =
= 5 cm * 6 cm * 6 cm = (5)(6)(6) cm³ = 180 cubic centimeters