<span>5x - y = 15 (1)
-10x+2y=-30 (2)
multiply (1) by 2
10x - 2y = 30
</span>-10x + 2y = -30 (2)
<span>---------------------------add
0 = 0
answer
</span><span>infinitely many solutions</span><span>
</span>
Could you maybe add more info? like a story or something
Question number 10 is the same as the previous questions add them up and make them equal to 180 degrees, and then solve for the x variable.
For the second part of the question, simply plug in the value of x for each expression for R and S.
Answer:
Step-by-step explanation:
= [ 
- 
] ← evaluate for upper limit - lower limit
= ( 
- 
) - ( 
- 
)
= - 8 - 9 +
= 
- 17
=
