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lorasvet [3.4K]
3 years ago
9

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

Mathematics
2 answers:
Ann [662]3 years ago
7 0

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

Mumz [18]3 years ago
6 0

Answer:

88\frac{1}{3} Or 88.33

Step-by-step explanation:

So since we know that <u><em>all the angles in a octagon add up to 1080 </em></u>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

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