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
yuradex [85]
3 years ago
11

How to solve a system of equations using elimination?

Mathematics
1 answer:
Nastasia [14]3 years ago
5 0
If  you have a problem like: 
4x+2y=20
2x+2y=16
 You would subtract
4x-2y=20
-2x+2y=16
You would get the new problum
2x=4
You now want to divide the 2 on both sides to solve for x
x=2

Now that you've solved for X you want to solve for y. So use substitution to solve for y. You would want to substatute the x for the 2 in either of the problums. I'll use the first one.
4(2)+2y=20

You first want to multiply te 4(2) you would get a new problum.
8+2y=20

Now you want to subtract the 8 on both sides.
2y=12

The last step to solve for y is to divide the 2 on both sides.
Y=6

So your answers would be
x=2
y=6


You might be interested in
Solve the equation. (If all real numbers are solutions, enter REALS. If there is no solution, enter NO SOLUTION.)
abruzzese [7]

Answer: 1

Step-by-step explanation:

16 * 1/2 = 8

7x + 1 = 8

7x = 7

x = 1

3 0
3 years ago
Read 2 more answers
What is the length of each leg of the triangle below?
iragen [17]

Answer:

option A

Step-by-step explanation:

since the given triangle is an isosceles triangle it's two remaining sides are equal

let the length of missing side be x

using pythagoras theorem

a^2 + b^2 = c^2

x^2 + x^2 = 22^2

2x^2 = 484

x^2 = 484/2

x = \sqrt{242}

x = 11\sqrt{2}

3 0
3 years ago
Please help the first correct answer gets brainleist​
Sedbober [7]

Answer:

38 1/2 meters

Step-by-step explanation:

You have to multiply 28× 1 3/8

You can convert yhe 1 3/8 to an improper fraction, then multiply, and convert back to a mixed number. See image.

OR,

you can distribute the 28 over the sum of 1 and 3/8. This just keeps the fraction a little bit smaller and you can practice distributive property see image

5 0
3 years ago
Find the equation of the line with slope 5/7 and passing through (1, -6).
Amiraneli [1.4K]

Answer:

y = 5/7x - 6 the slip should be positive and do the rise over run using 5/7 and make it go through -6 as the y and 1 add the x

3 0
4 years ago
And the last question is:
Leya [2.2K]
It should be " b " That should be right but u may want to wait for others to respond to this to make sure
6 0
3 years ago
Read 2 more answers
Other questions:
  • Michelle received an increase in salary from $33,000/yr to $35,000/yr.
    7·1 answer
  • How do I evaluate the expression -(p+q)2 /(-6) for p=2 andq=4
    7·1 answer
  • Simplify the expression (5+3i)(4-4i)<br><br> need help ASAP! Please
    10·1 answer
  • The initial cost for Travis and his band to record their first CD was $1500. Each CD will cost $4 to produce. If they sell their
    5·2 answers
  • Please help with this question
    12·2 answers
  • Solve for n <br><br> 2n − 3/5=5<br><br> Enter your answer in the box.<br> n =
    8·2 answers
  • if a countrys postal service currently uses 4-digit zipcode in most areas how many zipcodes are possible if their are no restric
    11·1 answer
  • Eugene wants to buy jeans at a store that is giving $10 off everything. The tag on the jeans is marked 50% off. The original pri
    12·1 answer
  • Mr Leonard red and white balloons for his sons birthday he ordered a total of 60 balloons , and there were 10 more red balloons
    9·1 answer
  • Do the following lengths form a right triangle? (Also how to tell that they do form a right triangle)
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!