Answer:
c
Step-by-step explanation:
np!
Answer:
what is your question...?
The answer is A hope this helps
Answer:
x² + 4x + 9
Step-by-step explanation:
This is just adding like terms (Adding x²'s to each other, adding x's to each other, etc.)
3x² - 2x² = x²
-x + 5x = 4x
7 + 2 = 9
So all together its x² + 4x + 9.
Answer: x = 3
y = 30
Step-by-step explanation:
substitute y = 10x into the first equation , we have
- x +2(10x) = 57
-x + 20x = 57
19x = 57
x = 57/19
x = 3
Substitute x = 3 into the second equation
10(3) = y
Therefore y =30