Answer:
21
Step-by-step explanation:
5x-3x=18+15-9
2x=42 /:2
x=21
Answer:1st option.
Step-by-step explanation:
Answer:
There are situations in which you may be required to solve a system of equations and no graph is present or available. In these instances, substitution and elimination are very effective solution methods.
Step-by-step explanation:
Answer:
I believe the answer is 128 degrees.
Step-by-step explanation:
x is congruent to 128 because they are vertical angles.