Multiply.(7 - 7i)(9 + 4i)
A. 91 - 35i
B. 35 - 91i
C. 91 + 35i
D. -28i2 - 35i + 63
Answer: A
Mathematics
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Solve the problem.Use the sequence of equations to find a general rule. 1 = 0 + 1 1 + 3 + 1 = 1 + 4 1 + 3 + 5 + 3 + 1 = 4 + 9 . . . . . . . . . . . . . . .Fill in the blank to complete the equation: 1 + 3 + 5 + . . . (2n + 1) + . . . + 5 + 3 + 1 = ?
A. n2 + (n + 1)2
B. (n - 1)2 + (n + 1)2
C. 
2 + 
2
D. n2 + (n - 1)2
Mathematics
Perform the indicated operation and simplify if possible.
A. 30
B. 
C. 
D. 
Mathematics
Solve.logw 100 = 2
A. w = 10 B. w = 2 C. w = 102 D. w = 100
Mathematics
Find the sum.-29 + 148
A. -119 B. 119 C. 177 D. -177
Mathematics