The constant of proportionality should be 45 miles per hour, and the car should travel 135 miles in three hours.
The answer is 3. I hope this help!
Answer:
Step-by-step explanation:
2a-7+15-5a
2a-5a-7+15
-3a+8
4x60=240
3x80=240
5x48=240
Answer 240
Hope that helps!
Jeff is correct because:
2 sides of a triangle must always be longer than the other side, so:
12+8>19
19+8>12
12+19>8
Since all of them are true, Jeff is correct
