Question

Find the value of x.

Answer 1

d

Explanation:

7x + 2 and 10x - 9 are same- side interior angles and sum to 180° , that is

7x + 2 + 10x - 9 = 180

17x - 7 = 180 ( add 7 to both sides )

17x = 187 ( divide both sides by 17 )

x = 11 → d

Answer 2

x = 11

between two parallel lines the angle is 180°

solve:

→ 7x + 2° + 10x - 9° = 180°

→ 10x + 7x +2° - 9° = 180° [ collect variables ]

→ 17x -7 = 180° [ simplify ]

→ 17x = 180° + 7° [ change sides ]

→ 17x = 187° [ divide both sides by 17 ]

→ x = 11