Solve.Two trains leave a train station at the same time. One travels north at 11 miles per hour. The other train travels south at 9 miles per hour. In how many hours will the two trains be 164 miles apart?
A. 16.4 hr
B. 4.1 hr
C. 8.2 hr
D. 8.7 hr
Answer: C
Mathematics
You might also like to view...
Find the volume of the described solid.The base of a solid is the region between the curve y = 5cos x and the x-axis from x = 0 to 
. The cross sections perpendicular to the x-axis are squares with bases running from the x-axis to the curve.
A. 
?
B. 6?
C. 
?
D. 
?
Mathematics
In a school survey, students showed these preferences for instructional materials. Answer the question.
About how many students would you expect to prefer lectures in a school of 900 students?
A. About 18 students B. About 324 students C. About 180 students D. About 162 students
Mathematics
Evaluate the line integral of f(x,y) along the curve C.f(x, y) = x2 + y2, C: y = -3x + 3, 0 ? x ? 3
A. 12
B. 36
C. 36
D. 216
Mathematics
Construct a frequency polygon.
A. Frequency
| Weight in pounds |
B. Frequency
| Weight in pounds |
Mathematics