Solve the system using matrices. x + y = -4
A. (-10, -6, -9)
B. (2, -6, 3)
C. (2, 6, 3)
D. (8, -6, 6)
Answer: B
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Use Pascal's triangle to expand the binomial.(x - 3y)6
A. x6 - 18x5y + 135x4y2 - 540x3y3 + 1215x2y4 - 1458xy5 + 729y6 B. x6 - 18x5y - 108x4y2 - 486x3y3 - 972x2y4 - 1458xy5 - 729y6 C. x6 - 18x5y + 36x4y2 - 54x3y3 + 36x2y4 - 18x y5 + 3y6 D. x6 - 18x5y - 729x4y2 - 60x3y3 - 729x2y4 - 18xy5 - 3y6
Use the graph to answer the question.
What was the total increase in sales for the first 6 months from 2008 to 2009?
A. $652,000 B. $18,000 C. $76,000 D. $12,000
The speed of an airplane with a tailwind is 285 miles per hour, and with a headwind 227 miles per hour. On a day with no wind, how far could the plane travel on a 4-hour fuel supply? ?
A. 1024 miles B. 1033 miles C. 1027 miles D. 1036 miles E. 1034 miles
Rewrite the expression as the sine, cosine, or tangent of a double angle. Then find the exact value of the trigonometric expression without the use of a calculator.2 sin 112.5° cos 112.5°
A. - 
B. 
C. 
D. - 