Elisa made a trip to her friend's house and back. on the trip there she drove 75 km/h and on the return trip she went 60 km/h. how long did the trip there take if the return trip took five hours?

t = 4 hours

Step-by-step explanation:

The distance is the same. The formula for distance is d = r*t

You could find the distance from the return trip. I'll do it that way and then take the short cut.

Method One

r = 60 km / hr

t = 5 hours

d = ?

d = r * t

d = 60 km/ hr * 5 hr   The hours cancel.

d = 300 km

Now the faster trip

d = 300 km

r = 75 km

t = ??

d = r * t

300 = 75 * t     Divide both sides by 75

300/75 = t

t = 4 hours.

Method Two

The distance is the same in both cases

r1 * t1 = r2 * t2

r1 = 75 km/ hr

t1 = ??

r2 = 60 km / hr

t2 = 5 hours

r1 * t1 = r2 * t2

75 * t1 = 60 * 5

75 km/hr * t1 = 60 km/hr * 5 hr

75 km / hr *t1 = 300 km                Divide by 75

t1 = 300 / 75

t1 = 4 hours

Notice both methods give the same answer.

on a coordinate grid, point a is at (−4.0, −2.4) and point b is at (4.0, −2.4). point b is a reflection of point a across the –axis. input either a lowercase x or i think is the right awnser

step-by-step explanation:

d

step-by-step explanation:

the 2000 florida legislature amended section 322.05, florida statutes, changing the requirements to obtain a class e license for a driver under the age of 18 holding a learner's license. the following requirements must be met in order to obtain a regular class e license if a learner's license is issued on or after october 1, 2000:

must hold a learner's license for at least 12 months or until the 18th birthday.

must have no convictions 12 months from the issue date of the learner's license.

may have one traffic conviction within 12 months from the issue date of the learner's license if adjudication is withheld.

a parent, legal guardian, or responsible adult over 21 years old must certify that the driver has 50 hours driving experience, including 10 hours of night time driving.