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Sphinxa [80]
2 years ago
8

What is the solution to the system of equations?

Mathematics
1 answer:
rosijanka [135]2 years ago
7 0

Step-by-step explanation:

3x - 6(2x + 4) = 3

3x - 12x + 24 = 3

-9x + 24 = 3

-9× = -21

x = 2.33

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Answer:

Therefore his average speed for the entire trip is 8 mph.

Step-by-step explanation:

Given, In 50 minutes Luis traveled uphill to gift store at 6 mph.

6 mph  means in 1 h= 60 minutes Luis can covered 6 mile.

In 1 minutes Luis can covered \frac{6}{60} mile.

In 50 minutes Luis can covered \frac{6\times 50}{60}  mile

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Again when he come back at home, the speed was 12 mph.

12 mph  means in 1 h= 60 minutes Luis can covered 12 mile.

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He traveled 5 mile in \frac{60\times 5}{12} minutes

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Total time for the entire trip is = (50+25) minutes = 75 minutes

\textrm{Average speed}=\frac{\textrm{Total distance}}{\Textrm {total time}}

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