Find the product and write the answer in simplest form. Assume variables represent nonnegative values. ? 

A.
B.
C.
D.

Answer: B

Mathematics

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Solve the initial value problem.Differential Equation:   = (t4 + 5t2)i + 4tjInitial Condition:  r(0) = 5i + 7j

A. r(t) =  i + (2t2 + 5)j
B. r(t) =  i + (t2 + 7)j
C. r(t) =  i + (2t2 + 7)j
D. r(t) =  i + 2t2j

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Mathematics

Find the length of the curve.x = , 1 ? y ? 9

A.  
B.  
C. 20
D.  

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Mathematics

Multiply and write the product in exponent form.a7 ? a4 ? a6

A. a11  B. a17  C. a10 D. a34 

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Mathematics

Solve the problem.A man who is between the ages of 65 and 90 says that his age is a prime number and that two years ago it was also a prime number. How old is the man?

A. 83 B. 71 C. 73 D. 79

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Mathematics