Mary drove 4 hours to reach her camping spot. Driving home, she
increased her speed by 15 miles per
hour, reducing her travel time by
1 hour. How fast did she drive going
to the camping spot?

r=45 mph answer

Step-by-step explanation:

d=rt

d=r*4 going

d=(r+15)*3 coming back

4r=3(r+15)

4r=3r+45

4r-3r=45

r=45 mph answer

check: 45*4=180 miles

         60*3=180 miles

answer: kljdcdhjbdlchjad oac apoich a

step-by-step explanation:

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk