Simplification of the expression gives 2a + c = -24
<h3>How to simplify the equation</h3>
4+4-3-4-2-5-1-8-9-0=a +c + a
First, let's add

Then, let's substract

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We then have,

Thus, simplification of the expression gives 2a + c = -24
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Answer:
14×4+21×2+28=126
Step-by-step explanation:
correct me if I'm wrong
I only know 1 & 4 .. 2 & 3 seem hard to me ..
X >7
X< -7
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A sled dog racer completed a race in 6 hours. Because of changes in the terrain, his average speed for the last 48 miles was twice as fast as his average speed for the first 12 miles. Which equation can be used to find r, his average speed in miles per hour, during the first 12 miles?
I got 12 hours and 31 minutes.