Answer:
4
Step-by-step explanation:
The cost for plan 1 will be ...
p1 = 10 +5x
The cost for plan 2 will be ...
p2 = 30
These costs are equal when ...
p1 = p2
10 +5x = 30
5x = 20 . . . . . . . . subtract 10
x = 4 . . . . . . . . . . . divide by 5
The two plans will cost the same if a customer borrows 4 DVDs in a month.
Answer:
62
Step-by-step explanation:
divide 29 by 42 and multiply the answer by 100
Multiply each design by each design:
3 shapes x 4 sizes x 3 input x 4 output = 144 different designs
I need help with a question about my homework or
Answer:
40 cans weigh over 14.7 ounces
Step-by-step explanation:
Given
Mean = 14 ounces
SD = 0.7
We have to find the z-score for 14.7 first
![z = \frac{14.7-14}{0.7}\\z = \frac{0.7}{0.7} = 1](https://tex.z-dn.net/?f=z%20%3D%20%5Cfrac%7B14.7-14%7D%7B0.7%7D%5C%5Cz%20%3D%20%5Cfrac%7B0.7%7D%7B0.7%7D%20%3D%201)
As we have to find the number of cans greater than 14.7, forst we will find the area to the left of obtained z-score and then subtract from 1.
So,
P(z<1) = 0.8413
Now,
P(z>1) = 1 - P(z<1) = 1-0.8413 = 0.1587
As the total number of cans is 250,
The cans which weigh over 14.7 are:
= 0.1587 * 250
= 39.675
Rounding off to nearest whole number
40 cans
Hence,
40 cans weigh over 14.7 ounces