Find the product.7a2x7(8a9x5 - 2x4 + 2a)

A. 56a9x5 - 14x4 + 14a
B. 56a11x12 - 2x4 + 2a
C. 56a11x12 - 14a3x11 + 2a
D. 56a11x12 - 14a2x11 + 14a3x7

Answer: D

Mathematics

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Find the unknown length in the right triangle. If necessary, approximate the length to the nearest thousandth.

A. 12.649 m B. 80 m C. 160 m D. 20 m

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Mathematics

Divide.

A. x4 + 4x3 + 8x2 + 16x + 19
B. x4 + 4x3 + 8x2 + 16x + 19 + 
C. x4 + x3 + 8x2 + x + 19 + 
D. x4 - 4x3 + 8x2 - 16x + 19 + 

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Mathematics

Find the function from the given verbal description of the function.If w is equal to the square root of x, y is the sum of w and 15, and z is y divided by 9, then write z as a function of x.

A. z = 
B. z = 
C. z = 
D. z =  + 15

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Mathematics

For the polynomial, list each real zero and its multiplicity. Determine whether the graph crosses or touches the x-axis at each x -intercept.f(x) = 4(x2 + 6)3

A. - , multiplicity 4, touches x-axis; -6, multiplicity 3, crosses x-axis
B. - , multiplicity 4, crosses x-axis
C. , multiplicity 4, touches x-axis; 6, multiplicity 3, crosses x-axis
D. - , multiplicity 4, touches x-axis

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Mathematics