Use the Pythagorean theorem to find the length of the unknown side of the right triangle. Give an exact answer.
A. 19
B. 181
C. 
D. 
Answer: C
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At one high school, the mean time for running the 100-yard dash is 
with a standard deviation of 0.9 seconds. The times are very closely approximated by a normal curve. Find the percent of times that are:More than 15.2 seconds
A. 48% B. 34% C. 68% D. 50%
Solve the problem.The table shows the population of a city for five years.
This data was used to develop the quadratic equation 
, which models the population of the city y in millions in the year x, where x = 0 represents 2007, x = 1 represents 2008, and so on. Use the model to find the estimated population in the year 2009.
A. 66,822,000 B. 1,490,000,000,000 C. 65,538,000 D. 1,490,000
Given f(x) and g(x), find the indicated composition and state its domain.f(x) = 3x + 15, g(x) = 2x - 1Find (g ? f)(x).
A. 6x + 29, all real numbers B. 6x + 18, all real numbers C. 6x + 12, all real numbers D. 6x + 14, all real numbers
Find A-1, if it exists.A = 
A. 
B. 
C. Does not exist
D. 