Answer:
x = -1 or x = -10
Step-by-step explanation:
x^2 + 11x + 10 = 0
x^2 + 10x + x + 10 = 0
x(x + 10) + 1(x + 10) = 0
(x + 1) (x + 10) = 0
x + 1 = 0 or x + 10 = 0
x = -1 or x = -10
The distance between them is 252 miles
For meeting they reduce the distance with 252 miles
in an hour they reduce distance with 100+80=180 miles
180 miles...........1 hour
252 miles.............x hours
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x=252 /180=1,4 hours=84 minutes
Answer:
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Step-by-step explanation:
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You will be able to purchase 6 sandwiches at $4 each.