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3 years ago

Question is 15 points

Mathematics

2 answers:

nignag [31]3 years ago

8 0

The measure of angle A to the nearest tenth of a degree is - 19.5

vlada-n [284]3 years ago

4 0

19.5 i believe. please make my answer brainliest if i'm right tysm

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Aleksandr-060686 [28]

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Step-by-step explanation:

Answer:

The area of the triangle is of 21 units of area.

Step-by-step explanation:

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$A = \pm 0.5 \left|\begin{array}{ccc}x_1&y_1&1\\x_2&y_2&1\\1_3&y_3&1\end{array}\right|$

In this question:

Vertices (1,0) (5,0) (3,4). So

$A = \pm 0.5 \left|\begin{array}{ccc}1&0&1\\5&0&1\\3&4&1\end{array}\right|$

$A = \pm 0.5(1*0*1+0*1*3+1*5*4-1*0*3-0*5*1-1*1*4)$

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3 years ago

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If you graph the 2 equations and see where they intersect, they will land on the answer.

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