Add.(5x2 - 2x - 5) + (-2x2 - 2x - 8)

A. 3x2 - 2x - 13
B. 3x2 - 4x - 13
C. 3x4 - 4x2 - 13
D. -10x2 - 2x - 13


Answer: B

Mathematics

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Convert to Decimal.

a. 118 b. 121 c. 256 d. 551 e. 763

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Solve.The force needed to keep a car from skidding on a curve varies jointly as the weight of the car and the square of the car's speed, and inversely as the radius of the curve. If a force of   is needed to keep an  car traveling at 20 mph from skidding on a curve of radius  what force would be required to keep the same car from skidding on a curve of radius 

style="vertical-align: -4.0px;" /> at  Round your answer to the nearest pound of force?

A. 13,582 lb
B. 14,284 lb
C. 13,714 lb
D. 13,746 lb

Mathematics

Solve the problem.The total cost in dollars for a certain company to produce x empty jars to be used by a jelly producer is given by the polynomial equation C(x) = 0.6x + 33,000. Find the cost of producing 90,000 jars.

A. $54,000 B. $33.60 C. $87,000 D. $90,033

Mathematics

Find the value of the determinant. 

A. -8 B. 8 C. 64 D. 4

Mathematics