Solve.An airplane travels 600 miles against the wind in 4 hours, and makes the return trip with the same wind in 2 hours. Find the speed of the wind.
A. 300 mph
B. 75 mph
C. 225 mph
D. 150 mph
Answer: B
Mathematics
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A projectile is fired with an initial speed of 700 m/s and angle of elevation 60°. Find the range of the projectile.
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Mathematics
Graph the ellipse and locate the foci.9x2 + 4y2 = 36
A. foci at (
, 0) and (-
, 0)
B. foci at (0, 
) and (0, -
)
C. foci at (
, 0) and (-
, 0)
D. foci at (2
, 0) and (-2
, 0)
Mathematics
Solve the application. Write the following number in standard form.A computer can do one calculation in 1.4 × 10-7 seconds.
A. 0.000014 B. 14,000,000 C. 0.00000014 D. 0.000000014
Mathematics
Decide whether the given sequence is finite or infinite.9, 10, 11, 12, . . .
A. Finite B. Infinite
Mathematics