The answer would be B -- 45
Answer:
81.85% of days would you expect the store to sell from 33 to 42 pairs of shoes
Step-by-step explanation:
The mean number of pairs of shoes sold by a shoe store is 36
![\mu = 36](https://tex.z-dn.net/?f=%5Cmu%20%3D%2036)
Standard deviation = ![\sigma = 3](https://tex.z-dn.net/?f=%5Csigma%20%3D%203)
We are supposed to find percent of days would you expect the store to sell from 33 to 42 pairs of shoes i.e.P(33<x<42)
Formula : ![Z=\frac{x-\mu}{\sigma}](https://tex.z-dn.net/?f=Z%3D%5Cfrac%7Bx-%5Cmu%7D%7B%5Csigma%7D)
At x = 33
![Z=\frac{33-36}{3}](https://tex.z-dn.net/?f=Z%3D%5Cfrac%7B33-36%7D%7B3%7D)
Z=-1
Refer the z table for p value
p =0.1587
At x = 42
![Z=\frac{42-36}{3}](https://tex.z-dn.net/?f=Z%3D%5Cfrac%7B42-36%7D%7B3%7D)
Z=2
Refer the z table for p value
p =0.9772
So,P(33<x<42)=P(x<42)-P(x<33)=0.9772-0.1587=0.8185
Hence 81.85% of days would you expect the store to sell from 33 to 42 pairs of shoes
Answer:
Step-by-step explanation:
28. Area of the circle = π
where r is the radius of the circle.
Given diameter = 14m, therefore radius =
= 7m
Now area of the circle = 49
or = 49 * 3.14 * 3.14 = 483.12![m^{2}](https://tex.z-dn.net/?f=m%5E%7B2%7D)
29. Volume of cylinder = π
h = π*
* 3 = 6.75π cu. feet or 21.195 cu. feet
30. A ball resembles a sphere. Volume of the sphere = ![\frac{4}{3} \pi r^{3}](https://tex.z-dn.net/?f=%5Cfrac%7B4%7D%7B3%7D%20%5Cpi%20r%5E%7B3%7D)
Given diameter = 30inches; Therefore, radius = 15 inches
Now, Volume of the ball =
= 4500π cu. inches or 14310 cu.inches
Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation;
3*n-4-(14)=0
Pull out like factors :
3n - 18 = 3 • (n - 6)
Solve : 3 = 0
This equation has no solution.
A a non-zero constant never equals zero.
Solve : n-6 = 0
Add 6 to both sides of the equation :
n = 6
Answer:
x=31°, y=52°,z=97°
Step-by-step explanation:
The interior angles of a triangle sum up to 180°
y°+ 31°+ 97°= 180°
y° = 180 - 31° - 97°
y=180°-128°
y° = 52°
Alternative angles are equal
x= 31°
Two opposite angles of a parallelogram are equal
z°= 97°
Therefore x=31°,y=52° and z=97°
The last choice is correct.