Answer: R = -5
Step-by-step explanation: 3r + 7= -8 is turned into 3(-5) + 7= 8. -15 + 7=8
Answer:
A.
Step-by-step explanation:
i think
Answer: 119°
Step-by-step explanation:
The two angles are alternate interior angles, meaning they're congruent. If you need help understanding that, just search alternate interior angles. The lines are parallel so it works.
Answer:
y = 3x - 6
Step-by-step explanation:
given 9x - 3y = 18
isolate - 3y by subtracting 9x from both sides of the equation
- 3y = 18 - 9x ( divide all terms by - 3 )
y =
- 
= - 6 + 3x = 3x - 6