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
iren [92.7K]
3 years ago
6

If 8x−4y=20 and 4x−8y=4, what is the value of x−y

Mathematics
1 answer:
olga nikolaevna [1]3 years ago
6 0

Answer:

x-y=3-1=2

Step-by-step explanation:

8x-4y=20                            4x-8y=4

8x=20+4y                            4(\frac{20+4y}{8})-8y=4

 x=\frac{20+4y}{8}                                               \frac{80+16y}{8} -8y=4

 x=\frac{20+4}{8}                                                10+2y-8y=4

x=\frac{24}{8}                                                 10-6y=4

x=3                                                  -6y=4-10

                                                   -6y=-6

                                                    y=1<u></u>

so x-y=3-1=2

You might be interested in
13x+5y=90 what is x? what is y?
Leona [35]

Answer:

X=-5y/13+90/13, Y=-13x/5+18

Step-by-step explanation:

You need to solve the equation for X and Y.

Solving for X:

13x+5y=90

Subtract 5y: 13x=-5y+90

Divide by 13: x=-5y/13+90/13

--

For Y:

13x+5y=90

Subtract 13x: 5y=-13x+90

Divide by 5: y=-13x/5+90/5

(Simplifies to -13x/5+18)

3 0
3 years ago
An arc of length 8 in. is intersected by a central angle in a circle with a radius of 3 in. What is the measure of the angle? Ro
krok68 [10]
Using the formula
L=rx  (x=angle)
x=L/r
x=8/3
x=2.6 radians
7 0
3 years ago
Under his cell phone plan, Aaron pays a flat cost of $49 per month and $3 per
statuscvo [17]

Answer:

The inequality would be $49 + g is less than $55

Step-by-step explanation:

I think that g would be 1 because that would make the bill $52 and it says that he wants to keep the bill under $55 not the same as $55

5 0
2 years ago
Turn this into a mathematical statement<br><br> One-half a number (x) is equal to 14
sergey [27]

One-half a number (x) is equal to 14.

One-half: 1/2

a number x: multiplied by x

is equal to: =

1/2x = 14

If you were going to solve for it, divide both sides by 1/2.

x = 28

3 0
3 years ago
Read 2 more answers
In triangles ABC and LMN draw the congruence marks
tatuchka [14]
Can you add the picture with it cuz i think you forgot
7 0
3 years ago
Other questions:
  • Graph x^2+60x+256in^2​
    15·1 answer
  • What is the answer to 6+(-6)
    9·2 answers
  • SHOW ALL WORK!!! Use the function f(x) = −16x2 + 24x + 16 to answer the questions. Part A: Completely factor f(x). (2 points) Pa
    13·1 answer
  • Find the slope m of point (0,3) and (0,-3)
    12·2 answers
  • Isaac is organizing a 5-kilometer road race. The safety committee
    14·1 answer
  • Because not all airline passengers show up for their reserved seat, an airline sells 125 tickets for a flight that holds only 12
    8·1 answer
  • How many months are in 59 days???
    10·1 answer
  • Plz answer fast! Look at the picture
    14·2 answers
  • A video rental store charges a $20 membership fee and $2.50 for each video rented. Find the slope and y-intercept for the data.
    13·2 answers
  • Help I'm stuck look at the picture and help if you can please.​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!