Perform the indicated operation. Write the result in standard form.5i + (-7 - i)
A. -7 + 6i
B. 7 - 6i
C. 7 - 4i
D. -7 + 4i
Answer: D
Mathematics
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Solve the problem.A ball is dropped from a height of 18 m and always rebounds 
of the height of the previous drop. How far does it travel (up and down) before coming to rest?
A. 54 m B. 36 m C. 108 m D. 90 m
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Convert the equation given in rectangular form into polar form.y2 = 2x
A. r = 2 cot2 x B. r = 4 cot x cscx C. r = 2 cot x cscx D. r2(cos ? + sin ?) = 2
Mathematics
Multiply and simplify.
? 
A. 
B. 
C. 
D. 
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Rotate the axes to eliminate the xy-term in the equation below and then write the equation in standard form. xy + 10 = 0
a. 
b. 
c. 
d. 
e. 
Mathematics