Answer:
i just need points!!!!!
Step-by-step explanation:
7(3r-1)-(r+5)=-52
21r-7-r-5=-52
21r-r-5-7=-52
20r-12=-52
Add 12 to both sides
20r=-40
Divide by 20
r=-2
Answer:
the truck driver can drive 64 miles in one hour.
Step-by-step explanation:
Number of miles driven in 45 minutes = 48 miles
48/45x60=64
Since all the inside angles are 60, in order to add up to 180, the outside angles need to be 120.
