Solve the system of linear equations.x + 5y = 0x - 5y = 40

A. (-4, 20)
B. (5, -1)
C. (20, -4)
D. (20, 4)

Answer: C

Mathematics

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Evaluate the integral using the given substitution. dt, u = 3 - sin 

A. - 3 + C
B. 3 + C
C. 43 + C
D. 3sin  + C

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Mathematics

Solve.A rectangle has an area of 3x2 + 25x + 42. Find possible dimensions for this rectangle.

A. 3x - 36 by x + 6 B. x + 7 by x + 6 C. 3x + 7 by x + 6 D. x - 36 by x + 6

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Mathematics

Determine whether the given set is finite or infinite. Consider the set N of positive integers to be the universal set, and let A = {n ? N| n > 50} B = {n ? N| n < 250} O = {n ? N| n is odd} E = {n ? N| n is even}B ? E

A. infinite B. finite

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Mathematics

Simplify. Assume that any variables are positive.

A.
B.
C.
D. 3

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Mathematics