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
kari74 [83]
3 years ago
6

How to solve this system of equation using substitution 3x+y=15 y=2x

Mathematics
2 answers:
Vesna [10]3 years ago
8 0

Answer:

x = 3

Step-by-step explanation:

3x + y = 15

Using substitution

3x + 2x = 15

5x = 15

x=3

docker41 [41]3 years ago
4 0

Answer:

x=3

Step-by-step explanation:

Substitute y with 2x meaning that your equation is now: 3x+2x=15

Now you combine like terms: 5x=15

Next, you isolate the variable by dividing both sides by 5.

Your final should be x=3

You might be interested in
QUICK GAME!!
bagirrra123 [75]

Answer:

QUICK GAME!!

This is Gill and Sasha

They want you to plan their wedding

Buffet meal: rice

Location: china

Theme colors: red

Cake flavor:   rice  aka rice cake a real thing

Capacity:  2 child

Season: thet are watching season 2 of demon slayer in the winter

___________________________________________________________________

Instructions: Copy and paste the questions, answer correctly, and have fun! DONT DELETE BRAINLY THIS IS FOR FUN

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
A medical drug trial is constructed to test the effects of a medicine on a disease. Half the people are given medicine and the o
Kamila [148]

Answer:

1/20 because it has no effect so it would always be the smallest fraction

Step-by-step explanation:

3 0
3 years ago
7. Consider the function g(x) = x^2 + 6x + 5. Now consider the quadratic function h(x), which has values given in the table of v
Ivenika [448]

Answer:

<h3>h(X) has a greater y-intercept.</h3>

Option C is the correct option

Step-by-step explanation:

The y-intercept is the value of the function where X is 0. For g(X) , y-intercept is 5 while the y-intercept of h(X) is 9.

So, h(X) has a greater y-intercept.

Hope this helps...

Good luck on your assignment..

7 0
3 years ago
Why does it takes 3 copies of 1/6 to show the same amount as 1copy of 1 / 2
Veseljchak [2.6K]
Because 1/2 ≠ 1/6.

We know that 1/6 < 1/2, so we can set up an equation to see how many copies are needed for them to be equal.

(1/6)x = 1/2
[(1/6)x] × 6 = [1/2] × 6
x = 6/2 = 3

This equation shows that 1/6 × 3 = 1/2, therefore we need 3 copies of 1/6 to equal 1 copy of 1/2.
3 0
3 years ago
Read 2 more answers
at a store 6 pounds of seed cost 157.38.if a farmer needed 5 pounds of seeds how much would it cost him?
blsea [12.9K]

Answer:

131.15

Step-by-step explanation:

  1. 157.38÷6=B
  2. B×5=A

B= 26.23

A= 131.15

4 0
3 years ago
Other questions:
  • The parent function f(x) = log3x has been transformed by reflecting it over the x-axis, stretching it vertically by a factor of
    13·1 answer
  • Can someone help me on 7-B, 8-B and please
    6·1 answer
  • <img src="https://tex.z-dn.net/?f=14y12555555y%29222522" id="TexFormula1" title="14y12555555y)222522" alt="14y12555555y)222522"
    8·1 answer
  • Twenty students in class A an 20 students in class B were asked how many hours they took prepare for a exam
    11·1 answer
  • 13. What is the highest number of degrees that an angle can have?<br> 180<br> 360<br> 90<br> 270
    6·1 answer
  • The area of the square is 36 cm2. What is the formula that shows the length of side b?
    15·1 answer
  • Does the point (-4, 2) lie inside or outside or on the circle x^2 + y^2 = 25?​
    9·2 answers
  • A rectangular tank has length 75mm, width 65mm and height 45mm. Calculate the total area surface of the tank when it is closed
    9·1 answer
  • If a man walks 150m down the street, stops to ask for directions, then walks 1 point
    9·1 answer
  • Identify the type of function represented by f(x)= 3(1.5)*.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!