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
hram777 [196]
3 years ago
7

use the elimination method to solve the system of equations. choose the correct ordered pairs -x + y=-3 and 3x + 2y=9

Mathematics
1 answer:
Agata [3.3K]3 years ago
3 0
-x+y=-3, 3x+2y=9

1. multiply the first row by the second
-2x+2y=-6, 3x+2y=9

2. subtract the second row from the first row
-5x=-15

3. sole for x in the above equation
x=-15/-5
x=15/5
x=3

4. substitue x=3 into -2x+2y=-6
-2*3+2y=-6


5. solve for y in the above equation
-6+2y=-6
2y-6=-6
2y=0
y=0

6 therefore,
x=3 and y=0


Have a nice day :D
You might be interested in
The Miller family wants to join a public swimming pool that charges a fee of $25.00 per year and then $3.00 for each visit.
REY [17]

Answer:

B) Yes

C) C = 3x + 25

Step-by-step explanation:

Given that:

Yearly charge = $25

Charge per visit = $3

The yearly cost will depend on the number of visits for the year :

B.) Cost can be represented by a linear function, as the graph it yields is a straight line graph having intercept and slope.

C.) C = mx + b

Where ;

b = intercept = yearly cost

m = slope or gradient = cost per visit

C = total cost

x = number of visits

Hence,

C = 3x + 25

6 0
3 years ago
Please show all work
san4es73 [151]

Answer:

<h2>I. 336 ft²</h2>

Step-by-step explanation:

We have

two right triangle with legs 6ft and 8ft

one rectangle 8ft × 12ft

one rectangle 6ft × 12ft

one rectangle 10ft × 12ft

The formula of an area of a right triangle:

A=\dfrac{ab}{2}

a,b - legs

Substitute:

A_1=\dfrac{(6)(8)}{2}=(3)(8)=24\ ft^2

The formula of an area of a rectangle:

A=lw

l,w - length, width (dimensions of rectangle)

Substitute:

A_2=(6)(12)=72\ ft^2\\\\A_3=(8)(12)=96\ ft^2\\\\A_4=(10)(12)=120\ ft^2

The Surface Area:

S.A.=2A_1+A_2+A_3+A_4\\\\S.A.=(2)(24)+72+96+120=336\ ft^2

6 0
3 years ago
What is the missing reason in the proof
Vesna [10]
I believe (C), is your answer....Transitive Property of Equality



Hope that helps!!!
5 0
3 years ago
Read 2 more answers
45 points fellas cmon
igomit [66]

Answer:

4x + 4y

Step-by-step explanation:

Hopefully this is the correct answer and hope this helps

4 0
3 years ago
Read 2 more answers
Which number is an integers <br> -3/4<br> 1/5<br> 2<br> 42/3
pishuonlain [190]
Integers are whole numbers so 2
6 0
2 years ago
Other questions:
  • Write if the following statement is true or false. Equivalent decimals are decimals that have the same value.
    9·2 answers
  • R.<br> BSolve for x.<br> X+19 x+29
    11·1 answer
  • The area of a square can be found using the equation A= s2, where A is the area and S is the measure of one side of the square.
    11·1 answer
  • In which quadrant does -8,-10 lie?
    9·1 answer
  • PLEASE HELP!! I do not understand how to do it!!!
    7·2 answers
  • Write the slope-intercept form of the equation of the line 13x - 11y = -12
    12·1 answer
  • WILL GIVE YOU BRAINLIST
    15·2 answers
  • I enter the mall with 75 dollars. I spend a dollars at American Eagle, which is $4 more than the amount I spent at Banana Republ
    15·1 answer
  • The multiple of two numbers is 60 what is the two numbers
    10·2 answers
  • Provide proof for Brainlyiest ong moms
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!