Solve the problem.The sum of two numbers is 31 and their difference is 11. Find the numbers.
A. 8 and 23
B. 21 and 10
C. 23 and 34
D. 10 and 21
Answer: D
Mathematics
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Find an upper bound for the magnitude |E| of the error in the approximation f(x, y) ? L(x, y) at the given point over the given region R.
at 
; R: |x + 8| ? 0.1, |y - 6| ? 0.1
A. |E| ? 0.04 B. |E| ? 0.02 C. |E| ? 0.01 D. |E| ? 0
Mathematics
Find dy/dx by implicit differentiation.x4/3 + y4/3 = 1
A. 
1/3
B. 
1/3
C. - 
1/3
D. - 
1/3
Mathematics
Find the area of the polygon.
A. A = 164 in.2 B. A = 119 in.2 C. A = 181 in.2 D. A = 264 in.2
Mathematics
Write the number as the product of prime factors.828
A. 2 ? 2 ? 2 ? 3 ? 3 ? 23 B. 2 ? 2 ? 3 ? 3 ? 23 C. 2 ? 2 ? 2 ? 2 ? 23 D. 3 ? 3 ? 3 ? 3 ? 23
Mathematics