Perform the indicated operation.40.1% - 10.9%
A. 29.5%
B. 29.2%
C. 51%
D. 29.1%
Answer: B
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Determine whether the statement is true or false. If it is true, explain why it is true. If it is false, give an example to show why it is false.
?
If f is a probability density function of a continuous random variable x in the interval 
, then the expected value of x is given by 
.
What will be an ideal response?
Write a system of equations associated with the augmented matrix. Do not try to solve.
= 
A. 2x + y = -3 x + 2y = 2 -5x - 5y = 2 B. 2x + y + z = -3 x - 5y = 2 C. 2x = -3 x + y = 2 -5x - 5y = 2
Solve.A fire fighter needs to estimate the height of a burning building. She estimates the length of her shadow to be 7
feet long and the length of the building's shadow to be 72 feet long. Find the height of the building if the fire fighter is 5 feet tall.
A. 120 ft B. 108 ft C. 79.5 ft D. 48 ft
Add and simplify. Write the answer as an improper fraction as needed.
+ 
A. 
B. 
C. 
D. 