Add and subtract as indicated.-8 + 12 - (-20)
A. -16
B. -40
C. 24
D. -24
Answer: C
Mathematics
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Express the number in scientific notation.4,200,000,000,000
A. 4.2 × 1012 B. 4.2 × 10-12 C. 4.2 × 10-9 D. 4.2 × 109
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Find the exact value of the expression if ? = 45°. Do not use a calculator.f(?) = sin ?Find 5f(?).
A. 
B. - 
C. - 
D. 
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Find the product.(3y2 - 2y - 1)(y2 + 4y - 3)
A. 3y4 + 12y3 - 17y2 + 2y + 3 B. 3y4 + 10y3 - 17y2 + 2y + 3 C. 3y4 + 12y3 - 18y2 + 2y + 3 D. 3y4 + 10y3 - 18y2 + 2y + 3
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Perform the addition.5 + 5.11
A. 10.11 B. 0.11 C. 10.21 D. -0.11
Mathematics