Multiply. Write your answer in a + bi form.(7 - 4i)(9 + 4i)
A. 47 - 64i
B. -16i2 - 8i + 63
C. 79 + 8i
D. 79 - 8i
Answer: D
Mathematics
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Solve the problem.Find the equation of the hyperbola with asymptotes 
and 
and vertex (-6, 4).
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
Mathematics
Find the approximate circumference of the circle.Round to the nearest thousandth.
A. 14.758 yd B. 7.379 yd C. 17.341 yd D. 29.516 yd
Mathematics
Solve the problem.Barry has a collection of 5 different baseball cards. He wants to give some or all of these cards to his friend. How many different sets of cards can he give?
A. 32 B. 5 C. 10 D. 31
Mathematics
Perform the indicated operations and simplify.
- 
+ 
A. 
B. 
C. - 
D. - 
Mathematics