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svetlana [45]
2 years ago
15

A triangle has vertices (-1, 2), (3, 1), and (7.2). What is the approximate perimeter of the triangle? Round your answer to the

nearest hundredth
Mathematics
1 answer:
Inessa [10]2 years ago
7 0

Answer

16.25

Step-by-step explanation: <em><u>To The Nearest Hundredth</u></em>

(-1, 2), (3, 1)

<u>√17</u>

(3, 1), (7, 2)

<u>√17</u>

(3, 1), (7, 2)

<u>√8</u>

So our answer is =

<u>8 + √17 + √17 = 16.25</u>

<u>hope it works for you!</u>

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agasfer [191]

Answer:

3 (28 n - 9)

Step-by-step explanation:

Simplify the following:

-9 (1 - 10 n) - 2 (3 n + 9)

-9 (1 - 10 n) = 90 n - 9:

90 n - 9 - 2 (3 n + 9)

-2 (3 n + 9) = -6 n - 18:

90 n + -6 n - 18 - 9

Grouping like terms, 90 n - 6 n - 18 - 9 = (90 n - 6 n) + (-9 - 18):

(90 n - 6 n) + (-9 - 18)

90 n - 6 n = 84 n:

84 n + (-9 - 18)

-9 - 18 = -27:

84 n + -27

Factor 3 out of 84 n - 27:

Answer: 3 (28 n - 9)

4 0
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Step-by-step explanation:

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