Solve the problem, if possible. Round your answer to the nearest tenth, when appropriate.A book has pages that are 
by 
. The printed matter on a page of the book must cover 
. If all margins are to be the same width, how wide should the margins be?
A. 9 cm
B. 12 cm
C. 3 cm
D. 2 cm
Answer: C
Mathematics
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Factor the polynomial completely using the grouping method.10x3 + 61x2 + 72x
A. 2x(x + 9)(5x + 8) B. x(2x + 8)(5x + 9) C. prime D. x(2x + 9)(5x + 8)
Mathematics
Solve.30 = (m2 + 7m)2 + (m2 + 7m)
A. 6, -1, 
, 
B. -6, -1, 
, 
C. -6, -1
D. -4, -1, 
, 
Mathematics
Find the expected value.A new light bulb has been found to have a 0.02 probability of being defective. A shop owner receives 500 bulbs of this kind. How many of these bulbs are expected to be defective?
A. 20 B. 100 C. 10 D. 500
Mathematics
Write the expression in the standard form a + bi.
2
A. - 
B. i
C. 
D. -i
Mathematics