Find the product.(4x - 5)(x + 9)

A. 4x2 + 30x - 45
B. x2 + 31x + 30
C. x2 - 45x + 31
D. 4x2 + 31x - 45


Answer: D

Mathematics

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Provide an appropriate response.Solve the following equation:  x +   =  x

Fill in the blank(s) with the appropriate word(s).

Mathematics

Use synthetic division to divide.(-5x3 - 13x2 + 10x + 12) ÷ (x + 3)

A. -5x2 + 2x + 4 
B. 5x2 - 3x + 4
C. -5x + 2
D. - x2 - x + 

Mathematics

Solve the problem.If the force acting on an object stays the same, then the acceleration of the object is inversely proportional to its mass. If an object with a mass of 40 kilograms accelerates at a rate of  per second per second (m/sec2) by a force, find the rate of acceleration of an object with a mass of  that is pulled by the same force.

A.  m/sec2
B. 35 m/sec2
C. 32 m/sec2
D. 40 m/sec2

Mathematics

Use synthetic division to show that the number given to the right of the equation is a solution of the equation, then solve the polynomial equation.x3 - 5x2 + 2x + 8 = 0; 2

A. {-4, -1, 2} B. {-4, 1, 2} C. {4, -1, 2} D. {4, 1, 2}

Mathematics