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lapo4ka [179]
2 years ago
12

Find x and y. pls pls help

Mathematics
1 answer:
Anna [14]2 years ago
7 0

Answer:

x = 65 , y = 64

Step-by-step explanation:

y - 16 and 2y + 4 are same- side interior angles and sum to 180° , that is

y - 16 + 2y + 4 = 180

3y - 12 = 180 ( add 12 to both sides )

3y = 192 ( divide both sides by 3 )

y = 64

then

2y + 4 = 2(64) + 4 = 128 + 4 = 132

the exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

2y + 4 is an exterior angle of the triangle , then

x + 67 = 132 ( subtract 67 from both sides )

x = 65

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Can someone help me please.... with number 6,7,8,9
Alenkasestr [34]

Answer :

6. x=28

7.x =6

8. x =9

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Step-by-step explanation:

\frac{x + 2}{10}  = 3

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6.

(x+2)/10 = 3

Cross multiply

x+2 = 10 ×3

x+2 =30

Collect like terms and simplify

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7.

8x + 9 - 5x = 27 \\ 8x - 5x = 27 - 9 \\ 3x = 18

\frac{3x}{3}  =  \frac{18}{3}  \\x  = 6

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Collect like terms and simplify

8x-5x =27-9

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3x/3 = 18/3

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8.

10x+8=8x+26

Collect like terms

10x-8x=26-8

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9.

2(x-5)+4x=x+35

Use 2 to open the bracket

2 × x =2x

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2x-10+4x =x+35

Collect like terms and simplify

2x+4x-x = 35+10

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5x/5 = 45/5

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