Perform the indicated operation. Write the result in the form a + bi.(3 - 7i) + (8 + 5i)

A. -11 + 2i
B. 11 + 2i
C. -5 + 12i
D. 11 - 2i

Answer: D

Mathematics

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Solve the problem.The distance s (in ft) above the ground for a projectile fired vertically upward with a velocity of 325 ft/s as a function of time t (in s) is given by s = 325t - 16t2. Find t for v = 0. Round your answer to the nearest tenth of a second.

A. 72.1 s B. 10.2 s C. 4.5 s D. 20.3 s

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Write the mixed number as an improper fraction.4

A.
B.
C.
D.

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Use the properties of logarithms to rewrite the logarithm if possible. Assume that all variables represent positive real numbers.log5  

A. log5 s - log5 6 -  log5 r
B. log5 6 ?  log5 r ÷ log5 s
C. log5 6 +  log5 r - log5 s
D. log5 (6) - log5 s

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Mathematics

Find the difference.-  - 

A. - 
B.
C. - 
D. - 

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Mathematics