catherine19 catherine19

21-05-2017
Mathematics

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For the diagram below, form an equation and then solve it to calculate the value of x

For the diagram below form an equation and then solve it to calculate the value of x class=

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abdul321azeez abdul321azeez

21-05-2017

you apply the sum of interior angles formula ie. (n-2)180. n=number of sides
since a pentagon has 5 sides it will be (5-2)180=540.
now add everything. x-5+x-6+2x-7+x+2x-2=540.
Solve for x: 7x-20=540
7x=540+20
7x=560
x=560/7
x=80

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