Answer: 8 hours
Step-by-step explanation:
Let x be the time before they meet ( in hours)
Speed of Sam = 12 mph
Sped of Fred = 9 mph
Distance = Speed × time
Distance covered by Sam in x hours = 12x
Distance covered by Fred in x hours = 9x
<em> (Distance) (rate1) (time1) (rate2) (time2)</em>
Total distance between them: 168 = 12 x + 9 x
Hence, the number of hours before they meet if Sam runs 12 mph and Fred runs 9 mph. = 8
Answer:
D) 3.250×10^4 days
Step-by-step explanation:
You know there are 24 hours in a day, so the number of hours must be divided by the hours per day to find the number of days:
(7.8×10⁵ h)/(2.4×10¹ h/da) = (7.8/2.4)×10⁵⁻¹ da = 3.250×10⁴ da
It shoul be the third one.
The equations are both in slope intercept form, where y=mx+b and b is the y intercept. The y intercept for both equations should be 2 and the only graph with that is the third one.