Question

Find the value of x
143°
2x°
116°
125°
152°
140°
139°
X°

Answer 1

Answer:

$88.33\°$

Step-by-step explanation:

Angles in an octagon add up to 1080 degrees.

$x+2x+143+139+140+125+116+152=1080$

$3x=1080-143-139-140-125-116-152$

$3x=265$

$x=265/3$

Answer 2

Answer:

$88\frac{1}{3}$ Or $88.33$

Step-by-step explanation:

So since we know that all the angles in a octagon add up to 1080 we can make a equation for this question which is down below.

$x+2x+143+139+152+140+116+125=1080$

So adding all that up we get this down below.

$3x+815=1080$

To find x we subtract 815 from 1080 and we get this.

$3x=265$

And finally we divide 265 and 3.

$x=88\frac{1}{3}$

So x is 88 and one-third nit it can be in decimal form like this below.

$88.33$ This is rounded to the nearest hundredth