Find the product.7ax5(-3ax3 - 6x2 + 3a)

A. -21a2x8 - 42ax7 + 21a2x5
B. -21a2x8 - 6x2 + 3a
C. -21a2x8 - 42ax7
D. -21ax3 - 42x2 + 21a


Answer: A

Mathematics

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Find the standard form of the equation of the ellipse satisfying the given conditions.Center at (0, 0); Focus at (3, 0); Vertex at (-5, 0)

A.  +  = 1
B.  +   = 1
C.   +   = 1
D.  +  = 1

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Find a and b.If -4 < x < -1, then a < x < b.

A. a = , b = - 
B. a = - , b = 
C. a = , b = 
D. a = - , b = - 

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Divide. Write the answer in lowest terms and as a whole or mixed number where possible. ÷ 1

A.
B. 2
C.
D.

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Solve the problem. Give the answer to the nearest thousandth if necessary.A rectangle has a length of  and a width of . What is the best estimate for its dimensions?

A. 20 by 9 B. 19 by 9 C. 19 by 8 D. 20 by 8

Mathematics