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Answer:</h2>

The solution for x in this equation is <em>18</em>.<em> </em>
Answer:
x= -17/11
Step-by-step explanation:
Solve the first equation for y.
3x+y=2
y=2-3x
Substitute
4x+(2-3x)=20
4x+2-3x=20
x=18
Answer:
13
Step-by-step explanation:
You are given the function

To find the value of the function f(x) at point x=a, you have to substitute a instead of x into the function expression.
In your case, you have to evaluate f(x) when x=10. Substitute 10 instead of x into the function expression:

What are you looking for?? Area? Perimeter?