Answer:
The cost of parking in the garage for 75 minutes is 4.875.
Step-by-step explanation:
The costs of parking h hours is given by the following function:
![f(h) = 4.5 + 1.5(h-1)](https://tex.z-dn.net/?f=f%28h%29%20%3D%204.5%20%2B%201.5%28h-1%29)
Cost of parking 75 minutes.
1 hour is 60 minutes. How many hours are 75 minutes?
1h - 60 min
xh - 75 min
![60x = 75](https://tex.z-dn.net/?f=60x%20%3D%2075)
![x = \frac{75}{60}](https://tex.z-dn.net/?f=x%20%3D%20%5Cfrac%7B75%7D%7B60%7D)
![x = 1.25](https://tex.z-dn.net/?f=x%20%3D%201.25)
75 minutes is 1.25 hours. So we have to find f(1.25).
![f(1.25) = 4.5 + 1.5*(1.25-1) = 4.875](https://tex.z-dn.net/?f=f%281.25%29%20%3D%204.5%20%2B%201.5%2A%281.25-1%29%20%3D%204.875)
The cost of parking in the garage for 75 minutes is 4.875.
Y-8/6=7
y-8=7(*6)
y-8=42
y=42(+8)
y=50
The answer is 50.
Answer:
6) not equivalent
7) equivalent
Step-by-step explanation:
6)
2 (3x - 5)
6x - 10
6x - 8 ≠ 6x - 10
7)
2 - 2 + 5x
5x
5x = 5x
<span>solution:
we have, mean =8.4 hrs, std. deviation = 1.8 hrs, sample size n = 40 , X = 8.9
Probability(X<8.9) = ?
we know that, Z = (X - mean)/(std. deviation/(sqrt. n)) = (8.9 - 8.4)/(1.8/(sqrt.40))
Z = 1.7568
from standard normal probabilities table, we have , P(Z<1.7568) = 0.9608
Hence, probability that the mean rebuild time is less than 8.9 hours is 0.9608</span>