Is the ordered pair a solution of the given system of equations?(2, -4), 

A. Yes
B. No

Answer: A

Mathematics

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First estimate the answer. Then add or subtract to find the exact answer. Write answer as a mixed number.

A. Estimate: 23; Exact: 
B. Estimate: 22; Exact: 
C. Estimate: 23; Exact: 
D. Estimate: 22; Exact: 

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Mathematics

Find the requested value of the second derivative of the function.f(x) = x4 + 3x3 - 4x + 9; Find f"(-2).

A. 7 B. 16 C. 12 D. -11

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Mathematics

Find the curvature ? and radius of curvature R for the curve at the given point.y = cos x,  

A. ? = , R = 
B. ? = , R = 
C. ? = , R = 
D. k = , R =  

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Mathematics

Write the following in interval notation.{x| x ? -7}

A. [-7,-?) B. (-?,-7] C. (?,-7] D. [-7,?)

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Mathematics