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hammer [34]
3 years ago
5

Answer this and I’ll mark you the Brainlest

Mathematics
2 answers:
liubo4ka [24]3 years ago
6 0

Answer:

The answer is D, x = 88

Step-by-step explanation:

Given that the total interior angles in pentagon is 540°. Then you add up all the interior angles together in term of x :

x+10°+x+20°+x+40°+x+30°+x = 540°

5x + 100° = 540°

Now, you can find the value of x :

5x + 100° = 540°

5x = 540° - 100°

5x = 440°

x = 440°/5

= 88

Elena-2011 [213]3 years ago
3 0

Answer:

D. 88

Step-by-step explanation:

if you add the given numbers up (equals 100) them subtract it from 540(the degrees of a Pentagon) you get 440. then divide that by 5 (number of xs left) you get 88. You can plug in 88 for x and check but I already did, I hope this helps you lemme know if it does :)

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