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 - 3 on [-3, 7] divided into 5 subintervals
A. 45
B. 
C. 9
D. 12
Answer: C
Mathematics
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Round the number to the specified place value.527,773 to the nearest ten thousand
A. 527,000 B. 530,000 C. 600,000 D. 520,000
Mathematics
Solve the problem.A store manager paid $64 for an item and set the selling price at $86.40. What was the percent markup?
A. 25% B. 36% C. 33% D. 35%
Mathematics
Find 
and 
.f(x, y) = x3 - 7x2y + 2xy3
A. 
= 3x2 + 2xy + 2y3; 
= -7x2 + 3xy2
B. 
= 3x2 - 14xy + 2y3; 
= -7x2 + 6xy2
C. 
= x2 - 7xy + 2y3; 
= -7x2 + 2xy2
D. 
= 3x2; 
= -7x2 + 6xy2
Mathematics
Express the vector as a product of its length and direction.
i - 
j + 
k
A. 
B. 
C. 
D. 
Mathematics