Solve the problem.If a projectile is fired at an angle ? and initial velocity v, then the horizontal distance traveled by the projectile is given by 
Express D as a function of 2?.
A. D = 
v2 sin 2?
B. D = 
v2 sin 2?
C. D = 
v2 sin 2?
D. D = 
v2 cos 2?
Answer: B
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2 fluid ounces = ? fluid drams
A. fldr 16 B. 2 fluid drams C. 4 fluid drams D. fldr 8
Find the standard deviation of the data summarized in the given frequency table.The heights of a group of professional basketball players are summarized in the frequency table below. Find the standard deviation. Round your answer to one decimal place. 
A. 2.9 B. 2.8 C. 3.3 D. 3.2
Factor out the greatest common factor. Simplify the factors, if possible.(x - 4)(x + 5) + (x - 4)(x + 5)
A. (x - 4)(x + 10) B. (x - 4)(2x + 10) C. 2(x - 4)(x + 5) D. 2(x - 4)(2x + 10)
Set up the percent proportion for the application problem. Do not try to solve for any unknowns.A chemical is 78% pure. In 760 grams of the chemical, how much is pure?
A. 
= 
B. 
= 
C. 
= 
D. 
= 