Simplify the algebraic expression.-15x3 - 12x3
A. -27x6
B. -28x3
C. -27x3
D. -27x9
Answer: C
Mathematics
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Find the center and radius of the circle with the given equation. x2 + (y + 9)2 = 4
A. Center (-9, 0), r = 2 B. Center (0, -9), r = 2 C. Center (0, -9), r = 4 D. Center (-9, 0), r = 4
Mathematics
Solve the triangle.
A. B = 40°, a = 5.5, c = 7.75 B. B = 45°, a = 5.5, c = 7.75 C. B = 40°, a = 7.75, c = 5.5 D. B = 35°, a = 7.75, c = 5.5
Mathematics
Simplify.- 
÷ (- 
)
A. 
B. - 
C. - 
D. 
Mathematics
Express the English phrase using an algebraic expression.Eight times the sum of a number x and -7
A. 8x - (-7) B. 8x + (-7) C. 8+ x + (-7) D. 8(x + (-7))
Mathematics