Determine whether the following is a difference of squares.x2 - 38
A. Yes
B. No
Answer: B
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Answer the question. You will need to use the formula 4.9t2 + vot = s.Approximately how far will an object fall in 5 seconds, if it is thrown downward at an initial velocity of 10 meters per second from a helicopter?
A. 175.8 meters B. 167.6 meters C. 178.2 meters D. 172.5 meters
Find the exact value of the trigonometric expression without the use of a calculator.If sin ? = - 
, ? < ? < 
and tan ? = - 
, 
< ? < ?, find the exact value of cos (? + ?).
A. 
B. 
C. 
D. 
Find all real numbers that satisfy the equation.2 cos x - 1 = 0
A. x = 
+ n? or x = 
+ n?
B. x = 
+ n? or x = 
+ n?
C. x = 
+ 2n? or x = 
+ 2n?
D. x = 
+ 2n? or x = 
+ 2n?
Solve the system of equations by graphing the equations on the same set of axes.
A. (-3, 2) B. (2, -3) C. (-2, 3) D. no solution