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
Vaselesa [24]
3 years ago
11

Solving each system elimination. (Help I’ll mark you brainly)

Mathematics
1 answer:
Sladkaya [172]2 years ago
8 0

Answer:

1) x=6, y=-6 which is (6,-6) as an ordered pair

3) x=10, y=-1 which is (10,-1) as an ordered pair

Step-by-step explanation:

Question 1:

<u>Solve them like an addition problem:</u>

-4x-2y=-12

4x+8y=-24

________

(-4x+4x)+(-2y+8y)=(-12+-24)

0x+6y=-36

6y=-36

y=-6

<u>Plug value of y into one of the original equations:</u>

4x+8(-6)=-24

4x-48=-24

4x=24

x=6

Question 3:

<u>Solve them like an addition problem:</u>

x-y=11

2x+y=19

_______

(x+2x)+(-y+y)=11+19

3x+0y=30

3x=30

x=10

<u>Plug value of x into one of the original equations:</u>

10-y=11

-y=1

y=-1

You might be interested in
If f(x)=8x+5, what is f(x)^-1?
Molodets [167]
F(8x+5)^-1=0.2

(8+5)^-1=0.077
5^-1=0.2
8x^-1=0.125
0.125-0.2=-0.075/0.2-0.125=0.075
7 0
3 years ago
5(3m+2)<br> 6(g+h)<br> 4d+8<br> 21p+35q<br> 18x+9y
aalyn [17]
<span>(a) 5(3m+2) = 15m + 10

(b) 6(g+h) = 6g + 6h

(c) 4d+8 = 4(d + 2)

(d) 21p+35q = 7(3p + 5q)

(e) 18x+9y = 9(2x + y)</span>
7 0
3 years ago
Solve the equation for x. show each step of the solution. name the justifications for each step of the solutions.
sweet [91]
9/2{8-x}+36=102-5/2{3x+24}
you first use 9/2 to open brackets
9/2*8=36,
9/2*x=9/2x
36-9/2x=102-5/2{3x+24}
5/2*3x=15/2x+60
36-9/2x=-15/2x-60
36+60=15/2x+9/2x
96=12x you then divide and the answer obtained will be 8.
x=8
5 0
3 years ago
Solve 3x - 5 + x = 31.
Sergio039 [100]

Answer:

x=9

Step-by-step explanation:3x-5+x=31

3x+x=31+5

4x=36

x=36/4

x=9

8 0
2 years ago
Read 2 more answers
4 more than the quotation of a number and 3​
fredd [130]

Answer:

3x + 4

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • Use the equation 2,401 = 76 – 2x. What power of 7 is 2,401?
    7·2 answers
  • Write the following sentence using mathematical symbols the sum of 7 and x is -13
    14·1 answer
  • A cylinder cardboard tube with a diameter of 8 centimeters and a height of 20 centimeters is used to package a gift. What is the
    13·2 answers
  • 4/5 dived by 3/4<br><br> Please help
    14·2 answers
  • Tom and his brothers caught 100 fish on a week-long trip.the total weight of the fish was 235 pounds
    11·2 answers
  • Can anyone help me please
    12·1 answer
  • Which expression is equivalent to
    13·2 answers
  • 1. Solve the following system of equations by elimination. What is the value of x?
    12·2 answers
  • A rental car company charges $77. 50 per day to rent a car and $0. 14 for every mile
    12·1 answer
  • A puppy weighs​534​pounds.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!