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Roman55 [17]
3 years ago
13

Need help on this This is on angles and triangles

Mathematics
1 answer:
choli [55]3 years ago
8 0

Answer:

a) 4x + 76 = 180 (x = 26)

b)

- m<1  = 102

- m<2 = 78

Step-by-step explanation:

First we know 4x + 76 = 180. The reason for that is we know angle one plus angle two = 180 so 3x + 1x + 76 has to equal 180.

We can solve for x now.

4x + 76 = 180.

Subtract 76 to maintain equality on both sides.

4x = 104.

x = 26

Now we can get the angles.

For angle #1 let's substitute x as 26.

angle one = 26 + 76.

angle one = 102

For angle #2 let's substitute x as 26.

angle two = 3(26)

angle two = 78

Let's check!

78 + 102 = 180.

180 = 180 YES

Well, this took some time :)

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