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adelina 88 [10]
3 years ago
14

the length of a rectangle is 3 inches more than its width if the perimeter is 42 inches find the dimensions of the rectangle

Mathematics
1 answer:
vaieri [72.5K]3 years ago
4 0

42=x+(x+3)+x+(x+3)

42=2x+(2x+6)

36=4x

9=x

l=9

w=12


check:9+9=18+24=42


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8 0
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Answer:

Step 1: It should be m∠m + m∠n + m∠o = 180° (sum of angles in a triangle)

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He made the mistake in Step 1: m∠m + m∠n + m∠p = 180°

It should be m∠m + m∠n + m∠o = 180°

Then only, he can equate it with m∠o + m∠p in step 3.

So,  m∠p is the exterior angle and m∠m and m∠n are the two remote interior angles.

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Hence, the correct answer is Step 1.

5 0
3 years ago
Read 2 more answers
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34kurt
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4 years ago
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Answer:

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