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
pishuonlain [190]
3 years ago
10

How do i solve 4x - 2y = 22 and 2x + 4y = 6 using substitution and elimination?

Mathematics
1 answer:
Fiesta28 [93]3 years ago
5 0

substitution and elimination means that you need to use one equation and substitute it in place of some variable in the other equation.

Consider the above two equations.

Take equation 1, which is 4x-2y=22 => x=(22+2y)/4

substitute the x value gained above in equation 2.

so, 2((22+2y)/4)+4y=6

22+2y+8y=12 => 10y = -10 => y= -1.

Substitute y= -1 in x value obtained in the beginning.

So, x= (22 - 2)/4 => 5.

There fore, x= 5 and y= -1

Hope it helps.

You might be interested in
What value of x makes the in quantity 1/2 x greater than or less than 7 true
koban [17]
The answer is 666 because I’m good at math
4 0
3 years ago
Which equations are equivalent to ? 3^3√x+4 =12 Check all that apply.
eimsori [14]

Answer:

option c

x + 4 = 64

and

option e

x = 60  

Step-by-step explanation:

Given in the question an expression

3∛x+4 = 12

∛x + 4 = 12/3

∛x + 4 = 4

Take cube on both sides of the equation

∛(x + 4)³ = 4³

x + 4 = 64

x = 64 - 4

x = 60  

4 0
3 years ago
Read 2 more answers
If the length of a rectangle is 6 more than twice the width and the total perimeter is 84cm, what is the rectangle's length?
tino4ka555 [31]

Step-by-step explanation:

length = 2×width + 6

84 = 2×length + 2×width

now using the first in the second equation :

84 = 2×(2×width + 6) + 2×width = 4×width + 12 + 2×width

84 = 6×width + 12

72 = 6×width

width = 12 cm

length = 2×width + 6 = 2×12 + 6 = 24 + 6 = 30 cm

5 0
2 years ago
-1/3(6x-15)+6x>8x-11 solve.
arsen [322]

In this question, you're solving the inequality for x.

Solve:

-1/3(6x - 15) + 6x > 8x - 11

Distribute the -1/3 to the variables in the parenthesis.

-2x + 5 + 6x > 8x - 11

Combine like terms

4x + 5 > 8x - 11

Subtract 8x from both sides

-4x + 5 > - 11

Subtract 5 from both sides

-4x > -16

Divide both sides by -4, while also flipping the inequality, since you're dividing by a negative.

x < 4

Answer:

x < 4

7 0
3 years ago
PLZ HELP AND HURRY!!!!
yuradex [85]

Answer: x=30, Good Luck!

Step-by-step explanation:

45/27 = 1.6666666...

1.66666...(18) = 30

8 0
2 years ago
Other questions:
  • Wendy already owns 3 necklaces, and addictions necklaces are priced at One for a dollar how much money does when do you need to
    12·2 answers
  • Find the present value that will grow to ​$23,000 if interest is 5​% compounded quarterly for 19 quarters.
    10·1 answer
  • Is y=7x-3 proportional or non-proportional?
    15·2 answers
  • A baseball pitcher has 60 2/3 innings. what is the number of innings written as a decimal?
    15·1 answer
  • Math really isn’t my best subject. help me
    7·1 answer
  • Will give brainliest to whoever solves this for me!
    6·1 answer
  • Select all ordered pairs that correspond to input-output pairs for the equation y = 6x + 4. A. (2, 10) B. (3, 22) (5, 34) +2/3 D
    12·1 answer
  • (4x²y³ + 2xy² – 2y) – (–7x²y³ + 6xy² – 2y)<br> Find the difference of polynomials ?
    14·1 answer
  • Please help me ! Please!
    13·2 answers
  • Solve for x. assuming that lines which appear tangent are tangent
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!