Maria = x
Tom = y
Use substitution
x+y=30
2y=x
2y+y=30
3y=30
y=10
Tom is 10 years old.
x+y=30
x+10=30
x=20
Maria is 20 years old.
Only thing i could think of to answer this is a scatter-plot. hope this helps..
Answer:
Square root of 2
Step-by-step explanation:
3x²=6
Divide each side by 3: 3x² ÷ 3=6÷3
X²=2
Then square root each side
So answer is square root of 2
