If a car travels at an average speed of x miles per hour,
how far would the car travel in 90 minutes?
x/2 miles
3x/2 miles
2x miles
9x/2 miles
=[
2007-06-07 07:58:15 · 10 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
If a car travels at an average speed of x miles per hour,
how far would the car travel in 90 minutes?
90 minutes = 1.5 hours
D= r x t
D = x miles/hour x 1.5 hours
D = 1.5x miles or 3/2 x miles
2007-06-07 08:00:30 · answer #1 · answered by ignoramus 7 · 1⤊ 0⤋
Answer: [3x/2 miles]
speed = (distance) / (time)
x = speed = (distance) / (time)
time = 90 minutes = 1.5 hours = 3/2 hours
SO the car would travel "x" miles in ONE hour or 1.5x miles in 90 minutes (90 minutes is an hour and a half). Since 1.5 = 3/2 then the car would go 3x/2 miles in 90 minutes.
2007-06-07 15:01:00 · answer #2 · answered by Anonymous · 0⤊ 0⤋
90 minutes = 90 / 60 = 3/ 2 hours
the distance = avrage speed multiply by time
= x multiply by 3/ 2
= 3x / 2 miles
2007-06-07 15:13:03 · answer #3 · answered by muhamed a 4 · 0⤊ 0⤋
you're probably confused because the question presents unlike terms: you can't directly compare miles per hour with minutes. You need to either convert hours to minutes, or minutes to hours. In this case, changing minutes to hours is easier:
90 minutes= 1.5 hours or 3/2 hours
(x miles/hours )(3/2hours)= 3x/2 miles
2007-06-07 15:06:10 · answer #4 · answered by frank m 3 · 0⤊ 0⤋
I love algebra! But, this seems a bit tricky.. I am barely in the seventh grade and I am not sure if I have learned this one, but I think you would have to solve for:
x= (? )
90 min
How far can a car travel in 1 min = x(speed?)
You need more information to answer this question..
You might want to go to math.com it is very helpful
And do research...
Hope this helped...
2007-06-07 15:05:01 · answer #5 · answered by teen♥gurl 2 · 0⤊ 0⤋
(1.)90/2=45
(2.)3(90)/2=
3x90=270
270/2=135
(3.)2(90)=180
(4.)9(90)/2=
9(90)=810
810/2=405
THERE YA GO..i HOPE THAT i HELPED YOU....
2007-06-07 15:08:05 · answer #6 · answered by Anonymous · 0⤊ 0⤋
3x/2 90 minutes is 1.5 hrs if it goes x miles in one hour it would go 1.5x=3x/2 miles in 1.5 hrs
2007-06-07 15:03:01 · answer #7 · answered by ben j 3 · 0⤊ 0⤋
I'm in PRC right now (don't judge me) and my teacher said its the second one(3x/2). she is a good algebra teacher!
2007-06-07 15:05:19 · answer #8 · answered by Sam 1 · 0⤊ 0⤋
d = rt
d = x(3/2) [90min = 3/2hr.]
2007-06-07 15:02:11 · answer #9 · answered by Darlene 4 · 0⤊ 0⤋
3X/2miles
2007-06-07 15:05:06 · answer #10 · answered by Anonymous · 0⤊ 0⤋