drew1200p9konv drew1200p9konv

02-06-2018
Mathematics

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What is the value of x?

What is the value of x class=

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vidalmari6p99qfk vidalmari6p99qfk

02-06-2018

x=21

x-4 + 3x +100=180

x + 3x =84(180-100-4)

4x=84

x=21

x-4=17

3x21=63

100+21+63=180

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torie001 torie001

02-06-2018

x=21

since there are 180° in a triangle you just have to make sure its equal,so it would be :
(21-4)+(3 *21)=100°
17+63+100=180

there for x equals 21

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