Sign In
Ask Question
Mathematics
Boy
3 August, 07:18
What is 3x+3y=-18 when y=2x
+2
Answers (
1
)
Matey
3 August, 09:41
0
Hello there!
To start, since you already know that the value of y equals 2x, you can plug 2x in place of y in 3x+3y=-18. This would look like this:
3x+3 (2x) = - 18
Now simplify:
3x+6x=-18
Now, combine your like terms:
9x=-18
And divide both sides by 9 to solve for x:
x=-2
Now that you have x=-2, you can plug that back into y=2x where you plug in - 2 in place of x:
y=2 (-2)
y=-4
Therefore, your x=-2 and your y=-4 which would be your final answer.
Comment
Complaint
Link
Know the Answer?
Answer
Not Sure About the Answer?
Get an answer to your question ✅
“What is 3x+3y=-18 when y=2x ...”
in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers
You Might be Interested in
Event B is dependent on event A, and event A occurs before event B. Which formula can be used to find the probability of event A? a. P (A and B) P (B) b. P (A and B) P (B|A) c. P (A and B) P (A|B) d. P (A and B) * P (B|A) e. P (A and B) * P (B)
Answers (1)
4 yd greater than 13ft
Answers (1)
You are selling tickets to a play. You have sold (3t+2) tickets for $5 each and (2t+5) tickles for $7each. Write an expression that represents the total numbers of tickets sold so far. Then simplify the expression.
Answers (1)
If a half gallon of milk cost $1.24, what is the cost per pint?
Answers (1)
What is a recriprocal of 25
Answers (1)
New Questions in Mathematics
Carol put some green and red unit cubes in a box. The ratio of the number of red cubes is 2:1. She adds 12 more red cubes in the box and the ratio becomes 4:5.
Answers (1)
A right triangle has a perimeter of 84. The ratio of each of the sides are 3:4:5. What are the lengths of each side of the triangle?
Answers (1)
Given the function f (x) = - 3x3 + 9x2 - 2x + 3, what part of the function indicates that the left end starts at the top of the graph?
Answers (1)
A square is cut into two congruent triangles by drawing the diagonal between two corners. If the area of each triangle is 162 cm, what is the length of the side of the square?
Answers (1)
Suppose ΔXYZ is given, and you want to construct ΔABC so that the triangles are congruent. Which constructions would guarantee that ΔXYZ ≅ ΔABC? Check all that apply.
Answers (1)
Home
»
Mathematics
» What is 3x+3y=-18 when y=2x
Sign In
Sign Up
Forgot Password?