Solve.Which of the pairs of numbers whose sum is 80 has the largest product?

A. 39 and 41
B. 40 and 40 
C. 34 and 46
D. 30 and 50


Answer: B

Mathematics

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Find the gradient field F of the function f.f(x, y, z) = 

A. F = i + j + k
B. F = - i - j - k
C. F = - i - j - k
D. F = i + j + k

Mathematics

Convert the capacity as indicated.160 ounces to cups

A. 40 c B. 20 c C. 80 c D. 320 c

Mathematics

For the resistor shown below, find the resistance and the tolerance, written as a percent. 

A. 920000 ? , ±5% B. 620000 ? , ±20% C. 62000 ? , ±20% D. 920000 ? , ±20% E. 660000 ? , ±20%

Mathematics

Write an equivalent expression with positive exponents and, if possible, simplify.(4xy)-3/4

A. -(4xy)3/4
B.
C.
D. (4xy)4/3

Mathematics