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
borishaifa [10]
3 years ago
5

Two numbers have a sum of 1212 and a difference of 518 what are are the two numbers

Mathematics
2 answers:
lapo4ka [179]3 years ago
7 0
This question involves systems of equations. You can use matrices on a graphing calculator or solve by elimination. Set this up as x+y=1212 and x-y=518. If you solve on a graphing calculator, click 2nd matrix then edit. Change the matrix to a two by three and input on the first line horizontally 1, 1, 1212 and on the second line 1, -1, 518. Then hit the quit button and go to the home screen. Click 2nd matrix again and hit rref and quit again and click on the name of the matrix. If you solve by elimination multiply the first one by -1 so your ys can cancel and then find x and plug in. So your two numbers are 865 and 347. 

-Trust me, learn how to do these on your calculator, it will minus the tricky solving of systems.
Mila [183]3 years ago
6 0
So write down your 2 equations:
 x + y = 1212
 x - y = 518

If you add them together, the y's will cancel out, leaving you to solve for you x
2x = 1730
x = 865

then substitute x back into one of your equations to find y
ex: 865 + y = 1212, y = 347
ex: 865 - y = 518, -y = -347, y = 347
You might be interested in
Triangle ABC , m∠A=45° and c = 16, find b.
zmey [24]

Using the cosine function:

\begin{gathered} \cos (\theta)=\frac{_{\text{ }}adjacent}{_{\text{ }}hypotenuse} \\ so\colon \\ \cos (45)=\frac{b}{16} \end{gathered}

Solve for b:

\begin{gathered} b=16\cdot\cos (45) \\ b=8\sqrt[]{2} \end{gathered}

5 0
1 year ago
There are x candies in a box. 8 of the candies are caramel-flavored and rest of them are strawberry-flavored. If the probability
sukhopar [10]
There is 5 candies in the boxes
3 0
3 years ago
5 x 10^5 is how many times as large as 1 x 10^5?
Oxana [17]

Answer:

  5 times as large

Step-by-step explanation:

You can think of "10^5" as "green marbles" if you like. Then your question is ...

  5 green marbles is how many times as large as 1 green marble.

Hopefully, the answer is all too clear: it is 5 times as large.

_____

In math terms, when you want to know how many times as large y is as x, the answer is found by dividing y by x:

  y/x . . . . . tells you how many times as large as x is y.

Here, that looks like ...

  \dfrac{5\times 10^5}{1\times 10^5}\\\\=\dfrac{5}{1} \qquad\text{the factors of $10^5$ cancel}\\\\=5

4 0
3 years ago
Read 2 more answers
Qustion to give kagimatoby a brainly
Colt1911 [192]

Answer:

wdym

Step-by-step explanation:

7 0
3 years ago
14 out of the 70 people in a company meeting were managers. What percentage of the
Svetlanka [38]

Answer:

%70

Step-by-step explanation:

<h2><u><em>Brainliest Please!</em></u></h2>
6 0
3 years ago
Read 2 more answers
Other questions:
  • A plane takes off at an angle of 15 and travels in a straight line for 3000 meters what's the height
    15·1 answer
  • Which expression is equivalent to 7a-8-12a+4
    7·2 answers
  • Log(8)a/2. Expand the logarithmic expression.
    10·1 answer
  • A carnival ride is in the shape of a wheel with a radius of 30 feet. The wheel has 30 cars attached to the center of the wheel.
    9·1 answer
  • What is the positive square root of 9/16​
    15·2 answers
  • Explain why each statement is true. 5 + 2 + 3 = 5 + (2 + 3)
    9·1 answer
  • Help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    14·2 answers
  • Please help me I will fail the exam help me please
    10·1 answer
  • ANSWER NOW PLEASE
    14·1 answer
  • I need help please .
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!