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
bulgar [2K]
3 years ago
7

If 2x +y=8, x+2y=4, find the value of x-y. Please, help me

Mathematics
1 answer:
kifflom [539]3 years ago
8 0

y = 8 -2x

x + 2 (8 - 2x) = 1

x + 16 - 4x = 1

x - 4x = -15

-3x = -15

x = 5

If x = 5, then we can substitute in...

5 + 2y = 1

2y = -4

y = -2

Now let us check that by substituting those values in to the equation

2x + y = 8

2 (5) + (-2) = 8

That is correct so we have the right values for x and y/

You might be interested in
An elevator starts on the 100th floor. It descends 4 floors every 10 seconds. At what floor will the elevator be 60 seconds afte
Artyom0805 [142]
So is 4 floors / 10 seconds
If you have 60 seconds you can multiple 10 by 6 because 10×6=60
so you also have to multiple 4 by 6
4×6=24
and because it's descending it's 100-24= 76
8 0
3 years ago
Read 2 more answers
PLEASE HELP !!
Firlakuza [10]

Answer:

<u>200</u>

Step-by-step explanation:

pi · radius · height

3.14 · 8 · 25 = 200

extra : i used symbolab.com :)

7 0
3 years ago
The hanger image below represents a balanced equation.
goldfiish [28.3K]
I think you forgot to put the image in the question
3 0
3 years ago
Read 2 more answers
Which category do both of these shapes belong to
nekit [7.7K]

Answer:

D. Parallelogram

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Triangle L M Q is cut by perpendicular bisector L N. Angle N L Q is 32 degrees and angle L M N is 58 degrees.
Serga [27]

Answer:

Yes

Step-by-step explanation:

ΔMNL ≅ ΔQNL  by ASA or AAS

by ASA

Proof:

∠ LNM = ∠LNQ    =90

LN = LN   {Common}

∠MLN = ∠QLN     {LN bisects ∠ L}

By AAS

∠Q + ∠QLN + ∠LNQ = 180  {Angle sum property of triangle}

∠Q + 32 + 90 = 180

∠Q  + 122 = 180

∠Q = 180 -122 =

∠Q = 58

∠Q = ∠M

∠MNL =∠QNL = 90

LN = LN {common side}

8 0
3 years ago
Other questions:
  • 8. Find the radius of a circular lid with an area of 12in.^2.
    11·1 answer
  • Suppose that an airline quotes a flight time of 128 minutes between two cities. Furthermore, suppose that historical flight reco
    11·1 answer
  • SOMEONE PLEASE HELP I NEED HELP!!!!!
    11·1 answer
  • The scale on a map of Indiana is 1 inch=42 miles jill measured the distance on the map from the eastern border to the western bo
    7·1 answer
  • Subtract: (-14z^2+1)-(-13z^2)
    9·2 answers
  • Which is the correct description of how to find the volume of a cylinder.
    5·1 answer
  • Find the value of x.
    11·2 answers
  • 12v-38=⅛*(4v-3) I need this answered plz
    12·2 answers
  • Solve for p. 7(p-9) = -34. 3
    8·1 answer
  • Help me Q_Q with this question please
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!