9514 1404 393
Answer:
x = 12
Step-by-step explanation:
The two marked angles are a linear pair, so are supplementary.
(8x -20)° +(8x +8)° = 180°
16x -12 = 180 . . . . . . . . . . . divide by °, collect terms
16x = 192 . . . . . . . . . . . add 12
x = 12 . . . . . . . . . . . divide by 16
Answer:
225
Step-by-step explanation:
360 - 135 = 225
the answer is 3/n - 5 = -7
Answer:
x = - 1, y = 2
Step-by-step explanation:
Given the 2 equations
6x + 5y = 4 → (1)
19x + 2y = - 15 → (2)
Multiplying (1) by 2 and (2) by - 5 and adding will eliminate the term in y
12x + 10y = 8 → (3)
- 95x - 10y = 75 → (4)
Add (3) and (4) term by term thus eliminating y
- 83x = 83 ( divide both sides by - 83 )
x = - 1
Substitute x = - 1 into either of the 2 equations and evaluate for y
Substituting into (1)
6(- 1) + 5y = 4
- 6 + 5y = 4 ( add 6 to both sides )
5y = 10 ( divide both sides by 5 )
y = 2
Answer: 2700
Step-by-step explanation:
