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4 years ago

Solve this question with calculation please:

Mathematics

1 answer:

melamori03 [73]4 years ago

5 0

Answer:

x=80

Step-by-step explanation:

the figure depicts a pentagon.

we can use linear pair method to find x

we should find interior angles

angle E= 180-90= 90

angle D=180-60= 120

angle C=180-x

angle A= 90 given

angle B= 180-40= 140

angle sum of a pentagon = 540

by formula (n-2)180. n is the number of sides

equation= 90+120+180-x+90+140= 540

620-x= 540

620-540=x

80=x

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3 years ago

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Shalnov [3]

Answer:

The standard form of $y= \frac{2}{3} x +7$ is -2 x + 3 y = 21.

Step-by-step explanation:

Here, the given expression is : y= 2/3 x +7

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