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2 years ago

Can someone help me with this please

Mathematics

2 answers:

Liono4ka [1.6K]2 years ago

8 0

<h2>Answer:</h2>

<u> Angle C is 7 * 18 - 4 = 122 </u>

<u> Angle B is 18 + 4 = 22 </u>

<u> Angle D is 2 * 18 = 36</u>

<h2>Step-by-step explanation:</h2>

As we know that the sum of all angles of a triangle is 180

So adding all the angles we get

2x + x+4 + 7x-4 = 180

10x = 180

x = 18

In order to find each angle, put x = 18.

Angle C is 7 * 18 - 4 = 122

Angle B is 18 + 4 = 22

Angle D is 2 * 18 = 36

Sever21 [200]2 years ago

4 0

Answer:

B = 22

C = 122

D = 36

Step-by-step explanation:

The angles of a triangle add to 180. Take the measure of each angle add them together. Set them equal to 180.

2x + x + 4 + 7x - 4 = 180

10x = 180

x = 18

To find each angle, substitute x = 18.

Angle B is 18 + 4 = 22

Angle C is 7(18) - 4 = 122

Angle D is 2(18) = 36

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