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ruslelena [56]
3 years ago
10

jimmy and his family are on their way to visit some family friends who live 780 miles away from them.based on the route they cho

se they expect to complete their trip in three days. the distances and average speeds for the first two days driven are shown below. first day 4 hours at an averge speed of 60 miles per hour second day 6 hours at average speed of 65 miles per hour if the average speed on the third day is 60 miles pe hour how many more hours willit tak foe them to reach their family friends home
Mathematics
1 answer:
schepotkina [342]3 years ago
6 0

If they drive an average of 60 miles per hour the last day it will take them 2.5 hours.


4 hours at 60 miles per hour = 4*60 = 240 miles

6 hours at 65 miles per hour = 6*65 = 390 miles


This is a total of 630 miles.  There are 780-630=150 miles left; if they average 60 miles per hour, that would be 150/60 = 2.5 hours.

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Find the fourth term of a geometric sequence if a=6 and r=2. Use the formula an=ar^n-1
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therefore, the 4th term is 48.

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8 0
3 years ago
A line passes through ( - 1, 1) and (3,9).
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4 0
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The app isn't letting me post the picture alone so this is just here so I can post the picture ;-;​
labwork [276]

Answer:

  (x, y) = (0, -2248)

Step-by-step explanation:

<u>Substitution</u>

Substitute for y:

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The solution is (x, y) = (0, -2248).

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<u>Elimination</u>

Subtract the first equation from the second.

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<em>Additional comment</em>

If you think for a bit about what the graph looks like, you realize both lines cross at their y-intercept, (0, -2248). That point of intersection is the solution to the system of equations.

7 0
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Or do they want it reduced to:

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Step-by-step explanation:


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