Answer:
6 hours
Step-by-step explanation:
420 ÷ 70 = 6. Divide the distance and speed to get the amount of time.
Number 15 is no solution.
Number 27 is that x has to be between -2 or 2.
This could be explained as -2≤x≤2
30, radius is equal to half the diameter, so to get diameter from the radius, multiply the radius by two.
The answer is x= 3.3 and the y=-., hope this helps out !
