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BlackZzzverrR [31]
2 years ago
15

A migrating bird flies 420 miles in 14 hours. How many miles does it fly in 5 hours?

Mathematics
1 answer:
vlada-n [284]2 years ago
5 0

Answer:

150 miles

Step-by-step explanation:

420/14 = 30 miles per hour

30 x 5 = 150 miles

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A = lw

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We can solve this by substitution method.

Look at the second equation. If we rearrange to find 7x, we can substitute in the value into the first equation.

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5y-7x-12=0

5y-12=7x

Therefore, 7x=5y-12

Now replace the 7x in the first equation with 5y - 12:

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2y+(5y-12)=-5

7y-12=-5

7y=7

y=1

Now that we know y, we can find x by substituting in y = 1 into any equation we want. I will use the equation: 7x = 5y - 12

7x=5y-12 (substitute in y = 1)

7x=5(1) -12

5x=5-12

7x=-7

x=-1

__________________________________________________________

<u>Answer:</u>

<u></u>y=1\\x=-1<u></u>

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