Solve the problem. Round approximations to an appropriate number of significant digits.An airplane travels 800 mi against the wind in 4 hr, and makes the return trip with the same wind in 2 hr. Find the speed of the wind.
A. 300 mph
B. 100 mph
C. 400 mph
D. 200 mph
Answer: B
Mathematics
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Find the area of the shaded region. f(x) = x3 + x2 - 6x
A. 
B. 
C. 
D. 
Mathematics
Solve.The roof of a building is in the shape of the hyperbola 
where x and y are in meters. Refer to the figure and determine the height, h, of the outside walls.A = 6 m
A. 67 m B. 5.8 m C. 8.2 m D. 33.5 m
Mathematics
Indicate whether the statement below is true or false. If it is false, find real number replacements for a and b that will provide a counterexample.
For all real numbers a and b, a + b = b + a. A) True B) False, 10 + 00 + 10 C) False, (10) + (–1)(1) + (–10) D) False, (–10) + (–1)(–1) + (–10)
Mathematics
Solve the equation for the specified variable.P = 
for t
A. t = 
B. t = P - rA
C. t = 
D. t = 
Mathematics