Remove parentheses and simplify.(8x - 8y + 8) - 2(-8x + 8y - 8)
A. 24x - 24y + 24
B. 16x - 16y + 16
C. -24x + 24y - 24
D. -16x + 16y - 16
Answer: A
Mathematics
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Solve.An earthquake had an intensity 108.4 times more powerful than a reference level earthquake, or 
What was the magnitude of this earthquake on the Richter scale? 
A. 1.6 B. 19.3 C. 18.4 D. 8.4
Mathematics
Divide using long division.423,146 ÷ 490
A. 276 B. 863 r 276 C. 863 D. 863 r 86
Mathematics
Add or subtract.(4 - 5i) + (6 + 9i)
A. -2 + 14i B. 10 + 4i C. -10 - 4i D. 10 - 4i
Mathematics
Solve.The perimeter of a square is 52 units. Write and solve an equation to find the length of one side, s, of the square.
A. s2 = 52; s = 26
B. 4s = 52; s = 13
C. 
= 52; s = 13
D. 4s = 52; s = 169
Mathematics