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slega [8]
3 years ago
7

Kevin hiked up lambs Canyon and two hours and then ran back down in one hour has been running downhill was 2.8 mph greater than

his speed hiking uphill how far of the canyon did he hike
Mathematics
1 answer:
coldgirl [10]3 years ago
8 0

Answer: he hiked 5.6 miles up the canyon.

Step-by-step explanation:

Let x represent his speed hiking uphill.

His speed running downhill was 2.8 mph greater than his speed hiking uphill. This means that his speed running downhill would be x + 2.8

Distance = speed × time

Kevin hiked up Lamb’s Canyon in 2 hours. This means that the distance covered by hiking uphill is 2 × x = 2x

He ran back downhill in 1 hour. This means that the distance covered by running downhill is 1 × (x + 2.8) =

x + 2.8

Since the distance uphill is the same as the distance downhill, then

2x = x + 2.8

2x - x = 2.8

x = 2.8

Therefore, the distance hiked up the canyon is

2x = 2 × 2.8 = 5.6 miles

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3 years ago
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Hope this helps sorry for the crumbled paper

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2 years ago
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5 0
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Please help!! And pls show work
coldgirl [10]
<h3>The answer to your question is k (-3) = 21!</h3>

Here's how I got this answer:

<em><u>K(a) = 2a^2 - a </u></em>

<em><u>K(a) = 2a^2 - a K(-3) = 2(-3)^2 - (-3)</u></em>

<em><u>K(a) = 2a^2 - a K(-3) = 2(-3)^2 - (-3)K(-3) = 2(9) + 3</u></em>

<em><u>K(a) = 2a^2 - a K(-3) = 2(-3)^2 - (-3)K(-3) = 2(9) + 3K (-3) = 18 + 3</u></em>

<em><u>K(a) = 2a^2 - a K(-3) = 2(-3)^2 - (-3)K(-3) = 2(9) + 3K (-3) = 18 + 3K (-3) = 21</u></em>

I hope this helps!

Also sorry for the late answer, I just got the notification that you replied to my comment, I hope I came in time!

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3 years ago
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