Question

Help !! Emergency: HW due tomorrow

Required to write a system of equations

11
Find x,y and measurement of angle GFQ

12
Find x,y and measurement of angle AGD

Answer 1

For 11. x = 15 and y = 15 ; ∠GFQ = 45°

Explanation:

Work for 11.

Know that when you add ∠GFS ∠QFP ∠PFT to ∠GFQ it should equal 180° because they are supplementary.

(2x + y) + (3x) + (3x + y) + (x + y) = 180

(5x + y) + (4x + 2y) = 180

9x + 3y = 180

Then add ∠GFQ ∠QFP ∠PFT ∠TFE

(3x) + (3x + y) + (x + y) + (3x) = 180

(6x + y) + (4x + y) = 180

10x + 2y = 180

Make the 2 equations equal to each other to find x and y.

9x + 3y = 10x + 2y

- 9x - 9x

3y = x + 2y

- 2y - 2y

y = x

Then plug in for y for ∠QFP ∠PFT

(3x + (x)) + (x + (x)) = 90

4x + 2x = 90

6x = 90

`(6x)/(6) = (90)/(6)`

x = 15

Then plug in x for ∠GFQ

3(15) = 45

Then to find y you add ∠GFQ and ∠QFS and plug in for x.

45 + (2(15) + y) = 90

45 + 30 + y = 90

75 + y = 90

- 75 - 75

y = 15