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amin282

Answer:3x + 4 = x+ 8   >  3x - x = 2x   >  2x + 4 = 8 >  8 - 4 = 4 > 2x / 2 crosses out > 4 / 2 = 2 > x=2

2y + 5 = y + 7 >  2y - y = y >  y+ 5 = 7 >  7-5= 2 > y=2

the perimeter of the kite is 4

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If AC = 30, AB = 5x-21, BC = 3y+4, CD = 2x-3, and DA = 4x+1 then the values of x = 6, y = 7,  z = 23.

How to estimate the values of the given function?

Let, AC = 30, AB = 5x-21, BC = 3y+4, CD = 2x-3, and DA = 4x+1

If ÀC = z + 7

the substitute the value of AC = 30

30 = z + 7

30 - 7 = z

The value of z = 23.

If CD = 2x - 3

then, AB = CD

the substitute the value of AB = 5x-21

2x - 3 = 5x - 21

21 - 3 = 5x -2x

18 = 3x

x = 18÷3

The value of x = 6

If DA = 4x+1 and BC = 3y+4

4x + 1 = 3y + 4

By substituting the value of x, we get

4(6) + 1 = 3y + 4

25 = 3y + 4

3y = 25 - 4

y = 21 ÷ 3

The value of y = 7.

Therefore, the value of x = 6, y = 7,  z = 23.

To learn more about the variables and functions

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