Using the formula y = kx
80 = .5k
k = 160
y = 160*2.25
y = 360
Answer:
18
H = cost per hour
15 = the rental price
0.75H = the hourly rental
Step-by-step explanation:
H = Cost per Hours
H = 15 + 0.75H
H = 15 + 0.75 * 4
H = 15 + 3
H = 18
Answer:
Yes circumference divided by ratio equals to pi
Answer:
Because the 
The integral converges to 
Step-by-step explanation:
For this case we want to find the following integral:
And we can solve the integral on this way:
And if we evaluate the integral using the fundamental theorem of calculus we got:
Because the
The integral converges to
Answer:
7
Step-by-step explanation:
σ = 4 ; μ =?
8.52 to the left of X
.
P(X < 8.52) = 64.8%
P(X < 8.52) = 0.648
Using the Z relation :
(x - μ) / σ
P(Z < (8.52 - μ) / 4)) = 0.648
The Z value of 0.648 of the lower tail is equal to 0.38 (Z probability calculator)
Z = 8.52 - μ / 4
0.38 = 8.52 - μ / 4
0.38 * 4 = 8.52 - μ
1.52 = 8.52 - μ
μ = 8.52 - 1.52
μ = 7
