An airplane flies at an an average speed of "K" mph. How far will it fly at that rate in 90 minutes? Write the equation. Let "N" stand for the answer ( Hint: convert 90 minutes to hrs. use D=rxt to write the equation)
2007-11-15 09:08:12 · 7 answers · asked by bodigger 1 in Science & Mathematics ➔ Mathematics
K mph
1.5 hrs(90min)
D=RxT
D=Kx1.5
D=1.5K
2007-11-15 09:12:49 · answer #1 · answered by ? 3 · 0⤊ 0⤋
N = K*90/60
2007-11-15 09:13:31 · answer #2 · answered by ironduke8159 7 · 0⤊ 0⤋
Let's see:
90 minutes is the same as 1.5 hours.
We need to use D = rt (called the distance formula), where D= distance, r = rate (which is our speed) and t = time (in hours NOT minutes).
If we let "N" stand for the answer, then we can replace D with N.
Then we have this:
N = K(1.5 hours)....This is your equation.
2007-11-15 09:16:25 · answer #3 · answered by Anonymous · 0⤊ 0⤋
d= k * 1.5 (90 min. is 1 1/2 hrs.)
2007-11-15 09:13:16 · answer #4 · answered by Saber 3 · 0⤊ 0⤋
N=(K)(90)/(60)
or 90min=1.5hr, so N=1.5K
2007-11-15 09:13:33 · answer #5 · answered by IRN_Ag 2 · 0⤊ 0⤋
d = st (distance = speed * time)
d = K mph * 1.5h
d = 1.5K m
2007-11-15 09:14:43 · answer #6 · answered by achain 5 · 0⤊ 0⤋
D = r x t
D= Kx 1.5
N=1.5K
2007-11-15 09:48:15 · answer #7 · answered by Janie333 2 · 0⤊ 0⤋