mallyosburn
18.11.2020 •
Mathematics
Jonah and Jessie are taking a trip. Jonah left at 7am and traveled an average of
40 miles per hour. Jessie left at 10am and traveled an average of 50 miles per
hour. At what time are they at the same place at the same time? Write a system of
equations to represent this situation. Then use the substitution method with that
system to determine at what time they will be in the same location. How many
miles away from home will they be at that time?
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Ответ:
[ Answer ]
[ Explanation ]
3x - 7 = 4 + 6 + 4x
Solve Equation To Find Out How Many Solutions Are Possible:
Add Numbers: 4 + 6 = 10
3x - 7 = 4x + 10
Add 7 To Both Sides:
3x - 7 + 7 = 4x + 10 + 7
Simplify:
3x = 4x + 17
Subtract 4x From Both Sides:
3x - 4x = 4x + 17 - 4x
Simplify:
-x = 17
Divide Both Sides By -1:
=
Simplify:
X = -17
We Have One Solution, And One Solution Only. Therefore, There Is One Solution To The Equation.