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
What are the solutions of the system 7x + 3y=-3 and y= -2*?
mafiozo [28]

Answer:

opt 4

Step-by-step explanation:

when x=0, 0+3y= -3, so y=-1    (0,-1) is solution

         when x=3 , 21+3y=-3,  3y= -3-21= -24

                                                    y= -8                  (3,-8) is also solution

8 0
3 years ago
Plssssssssssssssss help
cluponka [151]

Answer:

EF is the chord of K

hope it helped

7 0
3 years ago
Read 2 more answers
Are these fractions equivalent or nonequivalent?<br>xy/4y x/4​
Nina [5.8K]

Answer:

They are equivalent

Step-by-step explanation:

x/4 multiplied by y/y equals to xy/4y. Therefore, they are equivalent

8 0
3 years ago
The 32 oz can
Agata [3.3K]
30 I think not sure tho
6 0
2 years ago
Mai and Priya were on scooters. Mai traveled 15 meters in 6 seconds. Priya travels 22 meters in 10 seconds. Who was moving faste
Andrews [41]

Answer:

Mai was moving faster.

As, she covered a greater distance in the same amount of time.

Step-by-step explanation:

Given: Mai traveled 15 meters in 6 seconds and Priya travels 22 meters in 10 second.

Calculate the speed of both;

Speed defined as the rate at which an object covers distance.

Speed = \frac{Distance}{Time}

Mai traveled 15 meters in 6 seconds

then;

Speed = \frac{15}{6} = 2.5 m/s

Priya travels 22 meters in 10 second.

then;

Speed = \frac{22}{10} = 2.2 m/s

Reason: Mai traveled faster because she covered a greater distance in the same amount of time.

7 0
2 years ago
Other questions:
  • What’s the equation that would solve the surface area of the box
    8·1 answer
  • Solve for x in simplest form. 10=3/7(4x+35)
    10·2 answers
  • Where do these go and thanks :)
    15·2 answers
  • Five less then a number
    6·2 answers
  • Use the conversion formula to write the equation for the new function, F(t).
    5·1 answer
  • I NEED HELP WITH THIS! ITS A LONG MATH QUESTION TY :D
    14·1 answer
  • 2 1/3+5 5/16+ 2/7 is approximately equal to?
    15·2 answers
  • Does anyone know the answer to this????
    14·2 answers
  • A person invests 4500 dollars in a bank. The bank pays 5.25% interest compounded daily. To the nearest tenth of a year, how long
    6·1 answer
  • Find the sum of 6/12+1/2​
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!