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Katarina [22]
3 years ago
15

Which of the following can be the side lengths of a triangle?

Mathematics
1 answer:
kogti [31]3 years ago
7 0
<span>In a triangle the sum of two sides is always greater than the third side.

</span><span>A:12,9,21
</span><span>12+9 = 21
21 = 21  </span>⇒  no

<span>B:7,6,12
</span>7+6 = 13
13 > 12  ⇒  yes

<span>C:3,8,14
</span>3+8 = 11
11 < 14  ⇒  no

<span>D:23,13,37
</span>23+13= 36
36 < 37  ⇒  no

Answer: <span>B:7,6,12</span>
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Evaluate each expression using the values m = 7, r = 8, and t = 2.
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So I'll walk through the first 2. Then please try the other ones and let me know if you run into more problems.

5m-6

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So that was the first one.

4m+t

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hope it helps

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Problem 1

The error is 2 inches since her estimate is 2 inches off the true value.

We can think of it like this

4 feet = 4*12 = 48 inches

4 feet, 2 inches = 4 ft + 2 in = 48 in + 2 in = 50 inches

So she guesses he is 48 inches, but he's really 50 inches, so 50-48 = 2 inches is her error.

==================================================

Problem 2

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The percentage error is 4%

This means she is 4% off the target.

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