Simplify using properties of exponents.(49x4y4)1/2

A. x2y2
B. 7x2y2
C. 49x2y2
D. 2401x8y4

Answer: B

Mathematics

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Evaluate the integral using the given substitution., u = cot 5?

A. -  tan2 5? + C
B. -  cot2 5? + C
C.  csc3 5? cot2 5? + C
D.  cot2 ? + C

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Mathematics

Rewrite the given integral so that it fits the form , and identify u, du, and n.

A. ; u = e4x + 1, du = 4e4x dx, n = -1/2
B. ; u = e4x, du = 4e4x dx, n = -1/2
C. ; u = , du = e4x dx, n = -1
D. ; u = e4x + 1, du = e4x dx, n = -1/2

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Mathematics

The following table shows the earnings for the Juarez family last year. Solve the problem.MonthEarningsMonthEarningsJan.$1400July$1300Feb.$1150Aug.$2450Mar.$2950Sept.$2500Apr.$2300Oct.$2000May$1650Nov.$2350June$2700Dec.$2400Other expenses account for  of the family income. How much was spent last year on other expenses?

A. $4000 B. $4200 C. $5030 D. $5520

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Mathematics

Use the quadratic formula to solve the equation.2x2 = -5x - 7

A.
B.
C.
D.

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Mathematics