Using each picture or description of a triangle, write and solve an equation.

Step-by-step explanation:

All angles in a triangle add up to 180º, so we can make this equation.

7x-2+5x-10+4x=180

Combine like terms

16x-12=180

Add 12

16x=168

Divide

x=16.5

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6

2.56 is the width of the garden

step-by-step explanation: