5 gallons x gallons
------------- = ----------------
12 hours 240 hours
using cross products
5 * 240 = 12 * x
1200 = 12 x
divide each side by 12
1200/12 = 12x/12
100 =x
You will need 100 gallons
X^10 the exponent would be 10
4.
b^-2-x^-2/b^-1+x^-1
b^-2/b^-1=b^-1
x^-2/x^-1=x^-1
As a result, the simplest form is:
b^-1-x^-1. Hope it help!
Answer: 0.4207
Step-by-step explanation:
Let
be the sample mean area.
Given: Population mean :
sq. feet
Standard deviation:
sq. feet
Sample size : n= 10
The probability that the sample mean area is
or less if the manufacturer’s claim is true.

Required probability = 0.4207