Answer:
infinite solutions
Step-by-step explanation:
replace x with 3y + 9 in the second equation
9 - (3y + 9) = -3y ➡ 9 -3y -9 = -3y ➡9-9 = 3y-3y ➡ 0 = 0
this means whatever numver you write instead of y there will be a solution.
Answer:


Step-by-step explanation:
Given system of equations:

To solve by the method of substitution, substitute the first equation into the second equation and rearrange so that the equation equals zero:

Factor the quadratic:

Apply the <u>zero-product property</u> and solve for x:


Substitute the found values of x into the <u>second equation</u> and solve for y:


Therefore, the solutions are:


Answer:
Step-by-step explanation:
Surely you can figure out how many stairs she has to climb. She has to go down 4, back up to 0, and then up another 4, then back to 0
Answer:
(10,27)
Step-by-step explanation:
Hope this helps!!! :)
Answer:
6x + 11
Step-by-step explanation:
3x + 3 + 3x + 8
Combine like terms (terms with the same amount of variables).
3x + 3x + 3 + 8 =
(3x + 3x) + (3 + 8) =
6x + 11
6x + 11 is your answer.
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