Use a finite sum to estimate the average value of the function on the given interval by partitioning the interval and evaluating the function at the midpoints of the subintervals.f(x) = x2 - 5 on [-3, 7] divided into 5 subintervals
A. 35
B. 12
C. 7
D. 11
Answer: C
Mathematics
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Find the mass of the wire that lies along the curve r and has density ?.r(t) = 
i + 4tj, 0 ? t ? 1; ? = 3t
A. 
units
B. 
units
C. 
units
D. 
units
Mathematics
Solve.x + 193 = 610
A. 117,730 B. 803 C. 427 D. 417
Mathematics
Simplify.
A. 0 B. -91 C. 91 D. 182
Mathematics
Factor the polynomial as a perfect square or state that it is irreducible.4x2 - 28x + 49
A. (2x + 7)2 B. irreducible C. (2x - 7)(2x + 7) D. (2x - 7)2
Mathematics