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
strojnjashka [21]
2 years ago
14

Find the value of two numbers if their sum is 12 and their difference is 4. Systems of equations 8th grade math.

Mathematics
1 answer:
arlik [135]2 years ago
7 0

To solve this problem, we will setup a system.

We know that two numbers have a sum of 12 and a difference of 4.

So let's call our first number x and our second number y.

So we know that x + y = 12.

We can also say that x - y = 4.

Now rewrite the equations on top of each other.

<h2>x + y = 12</h2><h2>x - y = 4</h2><h2 />

Now we can use addition to solve this system.

When we add the equations together, the y's will cancel.

So we have 2x = 16.

Now divide both sides by 2 and x = 8.

Now plug an 8 back in for x in the first equation to find that y = 4.

So our numbers are 8 and 4.

You might be interested in
Convert 100 pounds to grams.
maria [59]

Answer:

45359.2 grams

3 0
3 years ago
If 40% of a number is 80 what is 25% of that number?
olga2289 [7]

Answer:

25% of 200 is 50

Step-by-step explanation

40% of a number is 80

.40 * n = 80

Divide each side by .4

.40 n/.4 = 80/.4

n = 200

The number is 200

Now lets find 25 percent of that number

.25 * 200 = 50


7 0
3 years ago
The perimeter of a rectangular painting is 324 centimeters. if the width of the painting is 67 centimeters, what is its length?
Nina [5.8K]
I hope this helps you



Perimeter =2 (width +length )


324=2 (67+length )


162-67=length


length =95
6 0
3 years ago
Find the area of the rectangle is x² + 7x + 12. if its breadth is (x + 3), then find its length.​
miv72 [106K]

Answer:

the length.​ is : x+4

Step-by-step explanation:

x² + 7x + 12  = (x+3)(x+4)

the length.​ is : x+4

6 0
3 years ago
Read 2 more answers
(2a^-2)(3a^3b^2)(c^-2)
aalyn [17]

Answer:

Step-by-step explanation:

7 0
2 years ago
Other questions:
  • How to write a number in 2 other forms
    6·1 answer
  • What is the answer to -8(-1)•1(-4)
    9·1 answer
  • Find the​ range, variance, and standard deviation for the given sample data. Include appropriate units in the results.Listed bel
    7·1 answer
  • Yul and Sarah's art class started at 11:25 A.M.The class lasted 30 minutes. Yulieft when the class was done. Sarah stayed an ext
    8·1 answer
  • Which of the following could be the numbers of left-handed and right-handed students at West Junior
    12·1 answer
  • Find the median of the data Weight (in ounces) of puppies in litter 17, 15, 19,18,17,16,22 Median: [?] oz​
    11·1 answer
  • A 552 ​-inch is cut into two pieces. One piece is three times the length of the other. Find the length of the shorter piece.
    12·1 answer
  • How to rewrite 9/10 and 23/25 so they have common denominators
    9·2 answers
  • Which ordered pair is a solution of the equation?
    13·2 answers
  • Help me to solve thisssss​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!