Multiply.(3x3y2)(-6xy2)(-7x5y)
A. -10x9y5
B. 126x9y5
C. -10x15y4
D. 126x15y4
Answer: B
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Factor completely.20x4 - 15x2 + 12x2 - 9
A. (20x2 - 3)(x2 + 3) B. (5x2 - 3)(4x2 + 3) C. (5x2 + 3)(4x2 - 3) D. (5x4 + 3)(4x - 3)
In a certain city there is a river running through the middle of the city. There are four islands and eleven bridges as shown in the figure below.
A graph that appropriately models this situation would have
A. 4 vertices and 11 edges. B. 11 vertices and 4 edges. C. 6 vertices and 11 edges. D. 11 vertices and 6 edges. E. none of these
Simplify. Assume that all variables represent positive numbers.
A. 7x10y19z B. 24.5x10y19z C. 2401x40y76z4 D. 3920xyz
Find the length of the unknown side of the right triangle with legs a and b and hypotenuse c. Round to three decimal places, if necessary.a = 20, c = 52
A. b = 56 B. b = 48 C. b = 49 D. b = 36