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5 votes
Find the value of x.
A.5
B. 40
C. 45
D. 20​

Find the value of x. A.5 B. 40 C. 45 D. 20​-example-1

2 Answers

4 votes

Answer:

B. 40

Explanation:

This is a straight angle; this means that 20 and 4x are supplementary angles.

SUPPLEMENTARY ANGLES: TWO ANGLES WITH A SUM OF 180°.


20 + 4x = 180.

First, subtract 20 from 180 and from 20.


20 - 20 = 0 (cancels itself out).


180 - 20 = 60.

Now we are left with 4x = 160.

Lastly, divide 160 from 4.


160/4 = 40.

Therefore, the value of x is 40.

Here's an attachment to make this process easier to understand.

Find the value of x. A.5 B. 40 C. 45 D. 20​-example-1
User Indranil Mondal
by
7.7k points
3 votes

(B) x = 40

Explanation:

4x + 20 = 180

4x = 160

x = 40

User DreamingOfSleep
by
8.8k points

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