Here you have 2 linear equations and are to solve this system. Both equations have already been solved for y, so you can set one of them = to the other one:
-2x+11 = -3x+21.
Then 3x-2x = 21 - 11, or x = 10 (answer)
Find y by subst. x = 10 into either of the given equations.
Solution is then (10, ? )
Answer:
AC = 30
Step-by-step explanation:
Start with:
Combine like terms.
Subtract 
from both sides of the equation.
Subtract 
from both sides of the equation.
Then, substitute for 
in 
Multiply.
Finally, add.
A, because: 20x10 1/2=210
And 20x11 1/4=225
And 225-210=15
So thats the answer.
6 is multiplied by 2 1/3 to get to 14. 70 divided by 2 1/3 is 30. The model of the train is 30 inches long.
Answer:
The answer to your question is: 30 in
Step-by-step explanation:
Data
1 piece
Width = 4 in
Length = 6 in
2 piece
Width = 6 inches
Proportions
4 : 6 :: 6 : x
x = (6 x 6) / 4
x = 9
Perimeter = 2(base) + 2(height)
= 2(9) + 2(6)
= 18 + 12
= 30 in
