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
kondor19780726 [428]
3 years ago
7

The sum of two numbers is 18 their difference is 8

Mathematics
2 answers:
Anna007 [38]3 years ago
4 0

When we write out the system of equations, we will get:

x+y=18

x-y=8

 We can then use elimination to get just one variable.

 x+y=18

+x-y=  8

 Which gives us:   2x=26

 We then divide by 2 and get:    x=13

 We next plug that into one of the two equations and solve for the other variable:    (13)+y=18

We subtract 13 from both sides and get:   y=5

So the two numbers are 13 and 5.

~ I hope this helped, and I would appreciate Brainliest. ♡ ~ ( I request this to all the lengthy answers I give ! )

hram777 [196]3 years ago
3 0

<em><u></u></em>

<em><u>Answer:</u></em>

<em><u></u></em>

<em><u></u></em>

<em><u>13 and 5</u></em>

<em><u></u></em>

<em><u></u></em>

<em><u>Step-by-step explanation:</u></em>

<em><u></u></em>

<em><u></u></em>

<em><u>x+y=18</u></em>

<em><u></u></em>

<em><u></u></em>

<em><u>x-y=8</u></em>

<em><u></u></em>

<em><u></u></em>

<em><u>_____</u></em>

<em><u></u></em>

<em><u></u></em>

<em><u>2x=26</u></em>

<em><u></u></em>

<em><u></u></em>

<em><u>x=13</u></em>

<em><u></u></em>

<em><u></u></em>

<em><u>So the first number must be 13</u></em>

<em><u></u></em>

<em><u></u></em>

<em><u>13+y=18</u></em>

<em><u></u></em>

<em><u></u></em>

<em><u>y=5</u></em>

<em><u></u></em>

<em><u></u></em>

<u><em>And the second number must be 5</em></u>

You might be interested in
Identify the maximum value of the function y = -6x^2- 12x - 1
Vlada [557]

Answer:

The maximum value is 5

Step-by-step explanation:

Since this is an upside-down parabola, the maximum value occurs at the vertex. Using -b/2a, we can find the x-value of the vertex and use that x value to plug back into the original function to find the maximum value.

x = -b/2a = -(-12)/(2(-6)) = 12/-12 = -1

f(-1) = -6(-1)^2-12(-1)-1 = 5

6 0
3 years ago
Read 2 more answers
I need this answer NOW pls help
Veronika [31]

Answer:

I will try

Step-by-step explanation:I will try finding the answer

7 0
3 years ago
Read 2 more answers
Two trains leave stations 228 miles apart at the same time and travel toward each other. One train travels at 105 miles per hour
Anastaziya [24]

Answer:

in 20 kilometers round they will meet

3 0
3 years ago
Need help with this Q&amp;A 4
ladessa [460]

Answer:

y=4x + 3/4

Step-by-step explanation:

6 0
3 years ago
"let v = r 2 with the usual addition and scalar multiplication defined by k(u1, u2) = (ku1, 0). determine which of the five axio
expeople1 [14]
Let \mathbf u\in\mathbb R^2, where

\mathbf u=(u_1,u_2)

and let k\in\mathbb R be any real constant.

Given this definition of scalar multiplication, we can see right away that there is no identity element e such that

e\mathbf u=\mathbf u

because

e\mathbf u=e(u_1,u_2)=(eu_1,0)\neq(u_1,u_2)=\mathbf u
5 0
3 years ago
Other questions:
  • Please help If you want you can show work.
    6·1 answer
  • joshia is taking his friends to the movies each ticket cost $10 and popcorn is $5 a bag there is a $3 service fee for the entire
    9·2 answers
  • How do you round 415,203 to the thousands place
    7·1 answer
  • The same astronaut visited Pluto. His weight on Earth was still 170 pounds, and his weight on Pluto was only 10 pounds. He remov
    12·1 answer
  • W +14÷4 times W +6 equals .75
    7·1 answer
  • What are all the powers of 3 in the range 3 through1000
    14·1 answer
  • CHECK MY ANSWER PLEASE
    14·1 answer
  • Challenge Question for Fun - Solve the problem: 66 x 200 = ?
    9·2 answers
  • What is 1 11/20 rounded to the nearest whole number
    5·2 answers
  • Write each fraction or mixed number as a decimal.<br> 7/8 <br><br> 7/20<br><br> 7/5<br><br> 9 29/40
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!