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
Y_Kistochka [10]
3 years ago
10

If 3x−y=12, what is the value of 8x2y

Mathematics
1 answer:
PSYCHO15rus [73]3 years ago
8 0

Answer:

8x=32\\2y=-24

Step-by-step explanation:

When solving for 1 variable, set the other to 0 and solve.

3x-y(0)=12\\3x=12\\x=4\\4*8=32\\8x=32\\\\3(0)-y=12\\-y=12\\y=-12\\-12*2=-24\\2y=-24

You might be interested in
Someone please help i dont know how to solve for 6 and 7 <br> :(
Sphinxa [80]

If I remember correctly, the solutions are only on the solid line or in the shaded area? therefore Answers could be:

6.) (-3,0.5) (-4,0) (-2,0) (-2,-5) (-3,-5) (-4,-1) (-3,-1) (-2,-1)

7.) (-1,0) (-2,0) (-3,0) (0,-1) (-4,-1)

7 0
2 years ago
PLEASE ANSWER ASAP!!! Using the given equation find the missing coordinates of the points and then find the slope of the line fo
Andrei [34K]

Answer:

Step-by-step explanation:A.

B.

Slope =

Step-by-step explanation:

We are given the equation of the line as .

A. The co-ordinate is given by

Substituting the value , we get,

implies  implies   i.e. 3x = -1 i.e.

Thus, the co-ordinate is .

B. The co-ordinate is given by

Substituting the value , we get,

implies  implies   i.e. 9y = 0 i.e. y= 0

Thus, the co-ordinate is .

Since, the slope of a line is given by .

We get,

Slope = .

i.e. Slope = .

i.e. Slope = .

Hence, the slope of the line is .

5 0
2 years ago
How much money do you earn in 1 hour if you earn 20 in 4 hours
VikaD [51]

Answer:

let’s make a Unit rate.

$20/4 hours = $5 per hour

So you earn $5 in 1 hour if you earn $20 in 4 hours.

hope this helps and pls mark me brainliest if it did ;)

6 0
3 years ago
Read 2 more answers
What is the x-value in the solution to this system of linear equations?
ASHA 777 [7]

Answer:

  4

Step-by-step explanation:

The y-variable can be eliminated by adding 3 times the first equation to the second:

  3(2x -y) +(x +3y) = 3(11) +(-5)

  7x = 28 . . . .  simplify

  x = 4 . . . . . . . divide by 7

_____

Using Cramer's Rule, you can also find the x-value. The math is not so different.

  x = ((-1)(-5) -(3)(11))/(-1(1) -3(2)) = -28/-7 = 4

8 0
2 years ago
The square pyramid pictured below has a surface area of<br> 9 m<br> 6 m<br> 6 m
Genrish500 [490]
Hey,just to let you know that they is no picture as I can’t answer it.
5 0
2 years ago
Read 2 more answers
Other questions:
  • Please help me with measurements
    13·1 answer
  • Solve using elimination.
    14·1 answer
  • What is the GCF for 24 and 60
    9·1 answer
  • How do i write (n+5)(2n-3) in general form?
    12·2 answers
  • Find the standard form of the equation of the parabola with a focus at (0, 8) and a directrix at y = -8.
    10·2 answers
  • HELLLP<br>A. 3y + 2x = -6<br>B. y = 4x - 2<br>C. y + 2 = (x + 5)<br>D. 10y + 8x = -20​
    5·1 answer
  • Does anyone know the answer 2=10-4y;2
    9·1 answer
  • PLEASE HELP
    10·1 answer
  • Teri incorrectly solved the system of equations below. Correctly identify the error Teri made. 2x - 10 y = -30 x - 5y = 20 Step
    8·1 answer
  • Help asap pls 15 points
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!