Question

PLEASE HELP !! it’s for math ...

Answer 1

Answer:

Step-by-step explanation:

sum of angles of a triangle= 180°

x+2x+2x+10=180

5x+10=180

5x=170

x=170/5

x=34

.:

x=34°

2x=34×2=68°

2x+10=2×34+10=68+10=78°

Answer 2

Answer:

34 degrees, 68 degrees, 78 degrees

Step-by-step explanation:

All angles in a triangle must add up to 180 degrees.

so

x + 2x + 2x + 10 = 180

(group together all the xs)

5x + 10 = 180

(subtract 10 from both sides)

5x = 170

(divide both sides by 5)

x = 170/5 = 34

Angle 1 = x

x = 34

Angle 1 = 34 degrees

Angle 2 = 2x

x = 34

(multiply both sides by 2)

2x = 68

Angle 2 = 68 degrees

Angle 3 = 2x + 10

x = 34

(multiply both sides by 2)

2x = 68

(add 10 to both sides)

2x + 10 = 68 + 10 = 78

Angle 3 = 78 degrees

CHECK YOUR ANSWERS:

All angles in a triangle must add up to be 180 degrees.

so

34 + 68 + 78 should equal 180

34 + 68 + 78 = 180 degrees

Hope this helps :)