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pentagon [3]
3 years ago
14

Mark walked 21,129 feet in one hour. at that speed, how many miles will he walk in 2 hours

Mathematics
2 answers:
balandron [24]3 years ago
7 0

Answer: 23.129

Step-by-step explanation:

Vladimir79 [104]3 years ago
3 0
So a mile has 5280 feet.

21,129/5280= 4 mph

multiply

4 x 2 = 8 miles in 2 hours
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Use rounding or compatible numbers to estimate the sum 271 + 425
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3 years ago
Is (–5, 0.5) a solution of this system? x – 4y = –7, 0.2x + 2y = 0 Substitute (–5, 0.5) into x – 4y = –7 to get . Substitute (–5
kaheart [24]

<u>ANSWER: </u>

(-5, 0.5) is the solution of given equation x – 4y = –7, 0.2x + 2y = 0.

<u>SOLUTION: </u>

Given, two equations are x – 4y = -7 → (1)

And 0.2x + 2y = 0 → (2)

We have to find whether (-5, 0.5) is a solution of given system or not.

For that, we have to solve the given two equations.  

Before solving let us multiply equation (2) with 2 in order to get y terms cancelled. Such that, our  process becomes easy.  

Now equation (2) becomes

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Now, add equation (1) and equation (3), we get

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So, the solution for given equations is (-5, 0.5).

Hence (-5, 0.5) is the solution of given equations.  

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