Solve the equation by factoring.5x(2x + 10) = 0

A. {0, -5}
B.
C. {0, 5}
D. {0, -5 , 5}


Answer: A

Mathematics

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Use linear interpolation to find the indicated value.The radius of a cone of fixed volume is related to the height according to the following table:If the radius is 4.13 cm what is the height?

A. 7.532 cm B. 7.525 cm C. 7.475 cm D. 7.500 cm

Mathematics

Solve.A pyramid-shaped piece of metal has a triangular base measuring 5.5 in. on each side. If the height of the piece is 10.2 in., find the weight of fifty of these pyramids. Assume that the metal has a density of 0.208 lb/cu in. (Round to the nearest pound.)

A. 510 lb B. 458 lb C. 482 lb D. 463 lb

Mathematics

Solve the problem.A stack of poles has 25 poles in the bottom row, 24 poles in the next row, and so on, with 5 poles in the top row. How many poles are there in the stack?

A. 315 B. 290 C. 320 D. 310

Mathematics

Solve the system by substitution or elimination. If a system is inconsistent or has dependent equations, say so.y = - x-5x - 7y = 1

A.
B. ?; inconsistent system
C.
D.

Mathematics