(ab) 7x + 10 = 9x + 2 (bd)find the length of ab

(AB) = 7x + 10

(BD) = 9x + 2

AB = BD

7x + 10 = 9x + 2

Solve for x.

7x - 9x = 2 - 10

-2x = -8

x = 4

AB = 7x + 10

AB = 7(4) + 10

AB = 28 + 10

AB = 38

AB = 7x + 10

BD = 9x + 2

AB = BD, therefore

7x + 10 = 9x + 2        subtract 10 from both sides

7x = 9x - 8        subtract 9x from both sides

-2x = -8       divide both sides by (_2)

x = 4

Put the value of x to the expression 7x + 10:

AB = 7(4) + 10 = 28 + 10 = 38

y < -3

step-by-step explanation:

-3y - 2 > 7

-3y -2 + 2 > 7+2

-3y > 9

-3y/-3 < 9/-3   (change the inequality sign when multiplying or dividing by a negative number)

y < -3