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Orlov [11]
3 years ago
15

I need to find the value of X

Mathematics
1 answer:
IRISSAK [1]3 years ago
8 0

Answer:

17.7

Step-by-step explanation:

This figure is a pentagon - a shape with 5 sides. In a pentagon, the figure's angles add to 540.

100 + 7x-4 + 3x + 23 + 9x - 6 + 90 = 540

190 +19x + 13 = 540

203 + 19x = 540

19x = 337

x = 17.7

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(to get the numbers out of the brackets you have to multiply all the numbers in the brackets to the number that is there, and in this case its 1.5)

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after that, you add them (because there is a plus sign, not a minus, multiplication sign or a division sign.)

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answer= -11.55

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