1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mr_godi [17]
3 years ago
14

5x+y=27 y=4x using substitution method

Mathematics
2 answers:
Feliz [49]3 years ago
7 0
Substitute 4x for y, and solve for x;
5x + (4x) = 27
9x = 27
x = 3
Substitute 3 in for x in the first equation and solve for y;
5(3) + y = 27
15 + y = 27
y = 12
Dvinal [7]3 years ago
4 0
 5x + y = 27
substitute: 5x + 4x = 27
combine: 9x = 27
divide (by 9): x = 3
You might be interested in
How do you solve the following problem: is (3,4) a solution to 2x+3y=10?
ale4655 [162]
The answer is C. plug 3 and 4 into the equation and see if it's true.
3 0
3 years ago
Help me i don't understand the problem
Mashutka [201]
The question is asking you to find out what number is a fraction of something. For example, the problem on the top right is asking 35 is 50% (one half) of a number so what you have to do is multiply 35 times 2 and the answer is 70
5 0
3 years ago
PLS PLS PLS I NEED HELP WITH MATH!!!! GAVE OFF ALL MY POINTS FOR THIS PLEASE GIVE A GOOD ANSWER!!!!!
labwork [276]

Answer:

This app is meant for 1 question at a time

Step-by-step explanation:

Not trying to be mean just saying, here's a funny cat picture

6 0
3 years ago
Read 2 more answers
How do u work this out and what's the answer
I am Lyosha [343]
1) you would need to turn both fractions so they have a common denominator, that would be 2 2/4 and 3/4
2) then subtract : 2 2/4 - 3/4, and you would subtract numerators and the whole number, but you keep the denominator the same. However, you cannot subtract 2 and 3 in this case, so you need to change 2 2/4 to 1 5/4 (they are still equivalent)
3) 1 5/4 - 3/4 = 1 2/4, which simplified version is 1 1/2
Therefore, the answer is 1 and 1/2
6 0
3 years ago
A line has the equation 3x–4y–12=0.<br><br> Is the point (2, −1) on the graph?
zmey [24]

Answer:

The point (2, -1 ) is not on the graph of the line.

Step-by-step explanation:

3x–4y–12=0

3*2 - 4*(-1) - 12= 0

6 + 4 - 12 =0

10 - 12 = 0

- 2 = 0 , false, so the point (2, -1 ) is not on the graph of the line.

3 0
3 years ago
Read 2 more answers
Other questions:
  • Angle DEF and angle FEG are supplementary. The measure of angle DEF = (9x +1) and the measure of angle FEG = (8x + 9). What is t
    5·1 answer
  • Evaluate (4.0x10^5)(7.0x10^7)
    9·1 answer
  • A. How many sixths are in two-thirds?
    11·2 answers
  • Paul purchased a used vehicle that depreciates under a straight-line method.
    15·1 answer
  • How to find the long side of a right triangle that has two same short side?
    8·1 answer
  • cookie recipe calls for 1/4 teaspoon of vanilla extract she has 9/12 of a teaspoon in her kitchen how many batches of cookies ca
    14·1 answer
  • What 2 numbers multiply to -36 and add to 16​
    8·1 answer
  • (x+7)(x+9) <br>Do this math problem by using the Foil method.​
    12·2 answers
  • Plsss help I know I’m asking a lot of questions
    5·1 answer
  • Find the measure of arc FD
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!