Solve the problem.An airplane flies 400 miles with the wind and 320 against the wind in the same length of time. If the speed of the wind is 40, what is the speed of the airplane in still air?

A. 360 mph
B. 365 mph
C. 350 mph
D. 160 mph

Answer: A

Mathematics

x3 + 2x2 + x + 2

A. (2x2 + 2)(x + 1) B. (x2 + 1)(x + 2) C. (x2 + 1)(2x + 2) D. (x2 + 2)(x + 1)

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Mathematics

Perform the operations indicated. Write your answer in simplest form.-10.1 - 14.3

A. -24.4 B. 4.2 C. -4.2 D. 24.4

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Mathematics

Find all solutions if . Give your answers in radians using exact values only. Verify your answer graphically. ?

What will be an ideal response?

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Mathematics

Evaluate.dx

A. 3e^b - 3
B. -
C. 3e^b
D. 3e^b - 1

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Mathematics