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
Valentin [98]
3 years ago
12

2x-8y=-24 6x+4y=68 Using elimination method

Mathematics
1 answer:
nikklg [1K]3 years ago
4 0
6(2x-8y=-24)
-2 (6x+4y=68)
12x-48y=-144
-12x-8y=-136
-56y=-280

-280÷-56=5
y=5

2x-8 (5)=-24
2x-40=-24
+40. +40
2x=16
16÷2=8
×=8


y=5
x=8
hope this helps, if needed a picture for better understanding,please comment.
You might be interested in
I don't know how to do this
vesna_86 [32]
He could have 30 dimes and 13 quartars
7 0
3 years ago
What is the solution for the =.
liq [111]

Answer:

solution for n is \frac{-13}{4}

Step-by-step explanation:

Given an equation containing one variable n.

The equation is as follows:

\frac{-5}{2} =\frac{3}{4} +n

To solve for n we can subtract 3/4 from both the sides

The result is

\frac{-5}{2} -\frac{3}{4} =n\\Take LCD as 4\\\\frac{-10-3}{4} =n

Verify:

Substitute the answer in the given equation.

\frac{-5}{2} =\frac{3}{4} -(\frac{13}{4} )

Both sides equal thus proving our correctness of answer.


3 0
3 years ago
Find the solution to the system of equations
Neko [114]

Answer:

x=1

y=-4

Step-by-step explanation:

Since -x-3=y subsitue that in at the top equation

- x - 3 =  - 7x + 3

- x =  - 7x + 6

6x = 6

x = 1

Plug x=1 back into the equation to solve for y.

y =  - 7(1) + 3

y =  - 4

3 0
3 years ago
I don't know how to do question 12(b)
Virty [35]
Amy: x skirts Betty: 2x skirts Carol: (2x) + 7 skirts If Amy has 18 less than Carol, than Carol's equation minus 18 equals Amy's equation: [(2x) + 7] - 18 = x +18 +18 (2x) + 7 = x + 18 - 7 -7 2x = x + 11 -x -x x = 11 Input the solution for x into the girls equation to double check. Amy: 11 Betty: 2(x) 2(11) =22 Carol: (2x) + 7 22 + 7 =29 Does Amy have 18 less than Carol? Carol - Amy = 18 29 - 11 = 18 18 = 18 the problem is solved
5 0
3 years ago
On a chilly day in New York, the temperature changed at -4 degrees per hour. How many hours did it take for the temperature to c
Aleks04 [339]

Answer:

9 hours

Step-by-step explanation:

36 degrees total /4 degrees per hour = 9 hours

6 0
3 years ago
Read 2 more answers
Other questions:
  • PLEASE SOMEONE HELP ME WITH THIS
    6·2 answers
  • As you ___________ your vehicle, look for fluids and other objects that were not there before you parked your vehicle.
    5·2 answers
  • Help the skeleton in the closet out,
    10·2 answers
  • Out or 1,000,000,000.00, how many 10,000.00s are there?
    6·1 answer
  • What number 1,2,3? Im a lil confused:/
    7·1 answer
  • A quadrilateral has angles that measure 87°, 69°, and 104°. What is the measure of the fourth angle? A. 50° B. 80° C. 100° D. 12
    6·2 answers
  • The cost of a large cake at a bakery is $21.00. The cost of a small cake is
    15·1 answer
  • 6. Write an equation for word problem and
    7·2 answers
  • For Spring Break, the Alpha Plus staff is planning a team building trip in
    5·1 answer
  • Solve for the given variable.​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!