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
nignag [31]
3 years ago
5

The sum of two numbers is 12. The first number,X, is twice the second number,y, which system of equations could be used to find

the two numbers ?
Mathematics
2 answers:
koban [17]3 years ago
6 0

Answer:

y=4, x=8

Step-by-step explanation:

system:

x+y = 12, x=2y

convert to 1 variable, simplify:

2y+y=12

3y=12

y=4

x=2y=4*2=8

Verdich [7]3 years ago
5 0

Answer:

The system of equations are:

x + y = 12

y = 2x  

Solution

x = 4

y = 12

Step-by-step explanation:

Given:

The sum of two numbers is 12. The first number, x, is twice the second number,y

Now we have to form the system of equations to find the solution.

The sum of two numbers is 12.

The first number = x

The second number y = 2x.

x + y = 12 ----(1)

y = 2x  --- (2)

These are the system of equations.

Now let's solve them.

Now plug in y = 2x in the first equation.

x + 2x = 12

Simplifying the like terms, we get

3x = 12

Dividing both sides by 3, we get

x = 4

To find the value of y, that is the second term, we need to plug in x = 4 in the second equation, we get

y = 2*4 = 8

So the first number is 4 and the second number is 8.

You might be interested in
Please solve.<br> w-(y-x)-1
Alex73 [517]

Answer:

w + x - y -1 that's how you solve it

4 0
3 years ago
Read 2 more answers
Sophia already has 22 plants in her backyard, and she can also grow 2 plants with every seed packet she uses. How many seed pack
Alika [10]

Answer:

11

Step-by-step explanation:

she already has 22 plants so 2 times 11 = 22 + the 22 she already has

3 0
2 years ago
The pattern follows the "add one dot to the top of each column and one dot to the right of each row" rule. What will the 10th te
Over [174]

Answer:

what are the answers for a b c and d

7 0
2 years ago
Movie tickets are $4 for regular admission and $3 for seniors. On a night where there were 190 people and total sales of $720 ho
labwork [276]
Answer is B: 150

write two equations

r+s=190
4r+3s=720

solve by substitution

the get r=150 s=40
8 0
3 years ago
Read 2 more answers
Which best summarizes the Pythagorean Theorem?
bezimeni [28]

Answer:

the bottom right one

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • What is the solution to the inequality 3t+&gt;15
    6·2 answers
  • Need help with finding A and B
    13·1 answer
  • Help me i need this on sep 16 2019
    5·1 answer
  • Help if you understand circles. Thanks
    11·1 answer
  • Find the vertex for the parabola given by the function ƒ(x) = −3x2 − 6x.
    7·1 answer
  • A local parking garage charges $5 for the first hour and $1.25 for each additional hour. Write an equation in function notation
    13·1 answer
  • 1 4/5 is an example of a (n)
    8·1 answer
  • a movie premiere had a full house at 350 film Buffs the price of the tickets were $6 for adults and $4 for underage the income f
    10·1 answer
  • A garden box has a perimeter of 16 feet. If the length is 6 feet, what is the area of the garden box?
    8·1 answer
  • Devon drove at the same speed for 4 hours. He drove a total of 120 miles,
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!