we can use pythagorean identieis
remember that 
also remember that
and 
so if we take
and divide both sides by
we get



subtracting
from both sides

now subsitute into original problem



the answer is -1
Answer:
The correct option is b) 1.70
Step-by-step explanation:
Consider the provided information.
The weekly sulfur dioxide emissions follow a normal distribution with a mean of 1000 ppm (parts per million) and a standard deviation of 25.
Thus, μ=1000 and σ = 25
The CEO wants to know if the mean level of emissions is different from 1000.
Therefore the null and alternative hypothesis is:
and 
The sample size is n = 50 and
ppm.
Now calculate the test statistic by using the formula: 
Substitute the respective values in the above formula.


Hence, the correct option is b) 1.70
Answer:
A. 60.5 
Step-by-step explanation:
A = 1/3(area of base)(h)
= 1/3(22)(8.25)
= 60.5 
Answer:
Jared worked 11 days as full 8-hour days.
Step-by-step explanation:
We have:
First day = 2 h
Second day = 4 h
After that = 8 h each day
Since his paycheck shows 94 hours of work, we can find the number of days that he works 8-hour day:

Where x is the number of days that he works 8-hours.


Therefore, Jared worked 11 days as full 8-hour days.
I hope it helps you!