Arailroad and a highway intersect at right angles. a train is 10 miles from the intersection at the same moment that a car is 6 miles from the intersection. both are traveling at 30 mph. how long until they are 4 miles apart?

After 12 minutes they will be 4 miles apart.

Step-by-step explanation:

Since they are intersect in right angle, the distance between them is the hypotenuse of the triangle formed by them with intersection.

A train is 10 miles from the intersection at the same moment that a car is 6 miles from the intersection.Both are traveling at 30 mph.

Let the time when distance between them is 4 miles be t.

Distance to intersection for train = 10 - 30 t

Distance to intersection for car = 6 - 30 t

We know that hypotenuse is 4 miles that is

Consider the smallest time, t = 0.2 hr = 12 minutes

After 12 minutes they will be 4 miles apart.

x is greater than 5

step-by-step explanation:

2x+7 is greater than 17

    -7                           -7

2x is greater than 10

divide by 2 each side

x is greater than 5