Student A Mean:
(78 + 99 + 80 + 85 + 95 + 79 + 85 + 96)/8 = 87.125
Student A Mean Absolute Deviation: 7.15625
Student B Mean:
(100+ 80+ 79+75+92+ 93+75+ 78+ 84) / 9 = 84
Student B Mean Absolute Deviation: 7.33
2:14 = 1:
What is the equivalent ratio?
Discount, markup, and commission word problems
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A store has a 40% off sale on headphones. With this discount, the price of one pair of headphones is $36.
What is the original price of the pair of headphones?
$
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Answer:
90$
Step-by-step explanation:
X(40%) = 36$
X(40/100) =36
40X = 3600
X = 90$
(recheck: 90$ x 40%= 36$)
A rectangle with an area of 61 units” is dilated by a scale factor of ;. Find the area of
the rectangle after dilation. Round your answer to the nearest lenth, if necessary.
Answer:
34 units
Step-by-step explanation:
I decided that one side is 61 units and the other is 1 unit, since that would make the area 61 units.
Then I multiplied 61 by 3/4, which equals a new length of 45.75 units, and I also multiplied 1 by 3/4, which equals a new length of 0.75 units.
Finally, I solve for the area of the rectangle:
45.75 x 0.75 ≈ 34 units (rounded to the nearest whole number)
about 40% of athletes at a gym use a professional trainer. The proportion of success is when p= 0.4. you choose a random sample of 50 athletes at a gym. Use this information to answer questions 14 and 15.
14) What is the standard error of the mean?
15) what interval captures 68% of the proportions for random samples of 50 athletes?
math is so complicated like dang teacher give us a break
What is the coefficient of y in the expression x+4y+3
I GIVE BRAINLIEST FOR EXPLANATION AND CORRECT ANSWER EXTRA POINTS
The lines graphed below are parallel.The slope of the red line is-4/3. What is the slope of the green line?
Answer:
-4/3
Step-by-step explanation:
You know that parallel lines have the same slope. So, if both lines are parallel, then they must have the same slope.
Answer:
-4/3
Step-by-step explanation:
A line thats parallel with a line with a slope -4/3 will have the same slope because it is parallel so it has the same the degree of tilt/slope
Select all the expressions that are equivalent to - 2/5 (15-20d + 5c).
-6 + 8d - 2c
-2c + 8d - 6
-2(3 - 4d + c)
-30 + 40d - 100
O 6-8d + 20
Austin Use the distributive property to overwrite 18 + 54 which expression could the student use
Answer:
18( 1 x 3 )
Step-by-step explanation:
find the greates common factor of 18 and 54
18
hope this helps
What number do these words represent?
Two-hundred thousand, ninety-seven
the perimeter of a rectangle is 15x+17y. if the length is 7/2x+7y, then find the width of the rectangle
A.) 4x+3/2y
B.) 8x+3y
C.) 8x+10y
D.) 4x+3y
Answer:
A
Step-by-step explanation:
Length : [tex]\frac{7x}{2} + 7y[/tex]
Perimeter: [tex]15x + 17y[/tex]
Perimeter = 2(Length + Width)
15x + 17y = 2( [tex]\frac{7x}{2} + 7y[/tex] + Width)
15x + 17y = 7x + 14y + 2(Width)
15x + 17y -7x -14y = 2(Width)
8x + 3y = 2(Width)
Width = [tex]\frac{8x + 3y}{2}[/tex]
Width = 4x + 3y/2
Can someone help me please
victor has 8/12 of a tank of gasoline left in his car. which fraction is greater than 8/12?
Answer:
5/6
Step-by-step explanation:
what are the factors of ×^2+4×+3
Answer:
(x+3)(x+1)
Step-by-step explanation:
I'm assuming you need to factorise?
Answer:
(x+1)(x+3)
if u want me to explain how it works let me know
Please help I don’t gat this
Answer:
30 yards
Step-by-step explanation:
the dotted line causes a rectangle and a triangle to be formed. the formula for area of a triangle is base times height divided by 2. you subtract 6 from 9 which is 3 and multiply it by 4 as it is the height of the triangle after, divide by 2 . since 4 and 3 is 12, dividing 12 by 2 is 6 which is the area of the triangle. the area of the rectangle is 6 times 4 which is 24. add 24 and 6 and u get 30
Find the solution set of the inequality 3x+5≤-13
Answer:
has to be under / or -13 so ...
x = -6
3(-6) + 5 =
-21 + 5 = -13
help meh I keep doing bad :/
Answer:
5,009.206
Explanation:
give to reasons why do you think Sin/excise tax is so high
the pounds p of the flour and how many cakes c you can make
Answer:
How many pounds of flour do you have and how many pounds of flour it takes to make a cake?
Step-by-step explanation:
I need help please help
Answer:
first one
28.26 im not 100% correct i dont think
Find the number of distinguishable permutations of the letters in MISSISSIPPI.
Answer:
There are 34,650 permutations of the word MISSISSIPPI - www.medium.com
A study of U.S. births published on the website Medscape from WebMD reported that the average birth weight of babies was 7.5 pounds and the standard deviation was about 1.2 pounds. Assume the distribution is approximately normal. Find the proportion of babies with birth weights of 6 pounds or less. Round your answer to 2 decimal places.
Answer:
The proportion of babies with birth weights of 6 pounds or less is 0.1056 = 10.56%.
Step-by-step explanation:
Normal Probability Distribution:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.
Average birth weight of babies was 7.5 pounds and the standard deviation was about 1.2 pounds.
This means that [tex]\mu = 7.5, \sigma = 1.2[/tex]
Find the proportion of babies with birth weights of 6 pounds or less.
This is the pvalue of Z when X = 6. So
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{6 - 7.5}{1.2}[/tex]
[tex]Z = -1.25[/tex]
[tex]Z = -1.25[/tex] has a pvalue of 0.1056
The proportion of babies with birth weights of 6 pounds or less is 0.1056 = 10.56%.
Whoever helps me will save my life
The scouts sold small and large boxes of cookies as a fund raiser. One scout sold 7 small boxes and 12 large boxes for $54.00. Another scout sold 5 small boxes and 10 large boxes for $60.00. The scout leader wrote a system of equations to represent the their sales.
7 x + 12 y = 54. 5 x + 10 y = 60.
Which constants can each equation be multiplied by so that one variable is eliminated when the equations are added? Check all that apply.
The first equation can be multiplied by 5 and the second equation by –6 to eliminate the y.
The first equation can be multiplied by –5 and the second equation by 6 to eliminate the y.
The first equation can be multiplied by –5 and the second equation by 7 to eliminate the x.
The first equation can be multiplied by 5 and the second equation by –7 to eliminate the x.
The first equation can be multiplied by –5 and the second equation by 10 to eliminate the x.
Answer:
1,3,4
Step-by-step explanation:
:)
Answer:
1,2,3,4
Step-by-step explanation:
i am just smart and dont cheat ;)
What is the image of (0,12)(0,12) after a dilation by a scale factor of \frac{1}{3} 3 1 centered at the origin?
Answer:
(1,36)(1,36)
Step-by-step explanation:
What is the mean of the data set?
Enter your answer as a decimal in the box. Round to the nearest tenth.
mean =
Answer:
2.4
Step-by-step explanation:
1.5+1.5+2+2+2+2.5+3+3.5+4=22
22/9=2.4
Answer:
2.4 I think and hello have a great day
What is the length, in feet, of the wire?
What is the value of xwhen ik o h)(r)
-1?
OA.
2
OB.
-3
O C. 1
OD.
4
I NEED HELP ASAP
Answer:
4
Step-by-step explanation:
..Urgent.. 600 students attend Ridgewood Junior High School. 10% of students bring their lunch to school everyday. How many students brought their lunch to school on Thursday?
Answer:
Number of student bring their lunch = 60
Step-by-step explanation:
Given:
Total number of student = 600
Student bring their lunch = 10%
Find:
Number of student bring their lunch
Computation:
Number of student bring their lunch = Total number of student x Student bring their lunch
Number of student bring their lunch = 600 x 10%
Number of student bring their lunch = 60
Group B & C
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If Stephen ate 3/4 of the 20 chips below, how many chips did he eat in all?