Solve.A plane flies 450 miles with the wind and 350 miles against the wind in the same length of time. If the speed of the wind is 25 mph, what is the speed of the plane in still air?
A. 200 mph
B. 205 mph
C. 225 mph
D. 190 mph
Answer: A
Mathematics
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Solve the system of equations.
A. (2, 
), (-3, 
), (2, -
), (-3, -
)
B. (1, 
), (-3, 
), (1, -
), (-3, -
)
C. (1, 
), (-2, 
), (1, -
), (-2, -
)
D. No solution
Mathematics
Write the decimal as a percent.0.26
A. 2.6% B. 260% C. 0.026% D. 26%
Mathematics
Find the inverse of the function.K = {(-6, -3), (3, 6), (-9, 7), (9, -7)}
A. K-1 = {(-7, -9), (-9, 3), (-3, -6), (7, 9)}
B. K-1 = {(-3, -6), (6, 3), (7, -9), (-7, 9)}
C. K-1 = {(-6, - 
), (3, 
), (-9, 
), (9, - 
)}
D. K-1 = {(-7, -9), (6, 3), (-3, 3), (7, 9)}
Mathematics
Solve.If the height of a triangularly shaped jib sail is 15 feet and its base is 5 feet, find the area of the sail. Use 
A. 37.5 sq ft B. 30 sq ft C. 75 sq ft D. 90 sq ft
Mathematics