a straight road slopes upward 15 from the horizontal. How long is the section of the road that rises a vertical distance of 250 feet?
please explain and solve
2006-11-05 12:12:13 · 4 answers · asked by Mike 2 in Science & Mathematics ➔ Mathematics
Recall that another name for slope is "rise over run"
So if your slope is 15 ft upwards, then for every 1 ft. of run, the road rises 15 ft.
So divide 250 rise by 15 rise/run to get your answer: run = 250/15 = 16.67 ft. (rounded). (16 2/3 ft.)
2006-11-05 12:18:20 · answer #1 · answered by dualspace 3 · 0⤊ 0⤋
easy if 1 unit of distance of road rises 15 feet, use a proportion to find 250 feet.
15 = 250
--- ---
1 x
15x=250
x=50/3 units
2006-11-05 20:16:58 · answer #2 · answered by Jose G D 2 · 0⤊ 0⤋
I assume you nean 15 degrees.
tab15=.268
250/.268=933'
If you mean 15%
250/.15=1667'
2006-11-05 20:31:51 · answer #3 · answered by yupchagee 7 · 0⤊ 0⤋
change in y/change in x = slope
y/250 = 15
y = 3750 ft
2006-11-05 20:16:00 · answer #4 · answered by bob h 3 · 0⤊ 0⤋