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
grigory [225]
3 years ago
6

Substitute x+2y=8 3x+2y=6

Mathematics
2 answers:
vekshin13 years ago
8 0
Use x+2y=8
Subtract 2y to make
x=8-2y

Plug this in to the other equation
3(8-2y)+2y=6

Distribute the 3
24-6y+2y=6

Combine like terms
24-4y=6

Solve
18/4=y, 9/2=y

Plug and solve for x
X+2y=8
X+(2*9/2)=8
X+9=8
X=-1
Zigmanuir [339]3 years ago
6 0
X + 2y = 8

3x+2y = 6

x + 2y =8
   -2y     -2y

x = 8 - 2y

Now replace the value for x into the second equation. 

3(8-2y) - 2y

Distribute property

3*8 = 24
3*2y = 6y

24 - 6y - 2y = 6

24 - 8y = 6
-24           -24 

-8y = -18

-8y/8 = -18/8

y = 2.25

Now replace the value for y into the equation.

x + 2(2.25) = 8
x + 4.5 = 8
    -4.5     -4.5

x = 3.5

Now we have our two values.

x = 3.5
y = 2.25
You might be interested in
Jessica is selling books during the summer to earn money for college. She earns a commission on each sale but has to pay her own
Nina [5.8K]
I believe it is B, as C and D both are based on the number of books sold while the only variable to determine the amount of money she earns are the additional doors she knocks on.
6 0
4 years ago
Read 2 more answers
Which is a integer?<br><br> A. 4.5<br> B. 2/7<br> C. -3<br> D. 14<br><br> hurry please!!!
Novay_Z [31]

Answer:

the answer is C

Step-by-step explanation:

hope this helps

6 0
3 years ago
Read 2 more answers
Sam walked of a mile to school. He also walked of a mile on his way home. How far did Sam walk in all?
hodyreva [135]
He walked 2 miles.
To school: 1 mile
From school: 1 mile
6 0
4 years ago
Find the inverse of F(x)=1/-x-1 +1
jek_recluse [69]

Answer:

0

Step-by-step explanation:

Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                    0-(1/(-x)-1+1)=0

Step by step solution :

Step  1  :

            1

Simplify   ——

           -x

Equation at the end of step  1  :

         1          

 0 -  ((—— -  1) +  1)  = 0

        -x          

Step  2  :

Rewriting the whole as an Equivalent Fraction :

2.1   Subtracting a whole from a fraction

Rewrite the whole as a fraction using  -x  as the denominator :

        1     1 • -x

   1 =  —  =  ——————

        1       -x  

Equivalent fraction : The fraction thus generated looks different but has the same value as the whole

Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator

Adding fractions that have a common denominator :

2.2       Adding up the two equivalent fractions

Add the two equivalent fractions which now have a common denominator

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

-1 - (x)     -x - 1

————————  =  ——————

   x           x  

Equation at the end of step  2  :

       (-x - 1)    

 0 -  (———————— +  1)  = 0

          x        

Step  3  :

Rewriting the whole as an Equivalent Fraction :

3.1   Adding a whole to a fraction

Rewrite the whole as a fraction using  x  as the denominator :

        1     1 • x

   1 =  —  =  —————

        1       x  

Step  4  :

Pulling out like terms :

4.1     Pull out like factors :

  -x - 1  =   -1 • (x + 1)

Adding fractions that have a common denominator :

4.2       Adding up the two equivalent fractions

(-x-1) + x     -1

——————————  =  ——

    x          x

Equation at the end of step  4  :

      -1

 0 -  ——  = 0

      x

Step  5  :

Equation at the end of step  5  :

 1

 —  = 0

 x

Step  6  :

When a fraction equals zero :

6.1    When a fraction equals zero ...

Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.

Now,to get rid of the denominator, Tiger multiplys both sides of the equation by the denominator.

Here's how:

 1

 — • x = 0 • x

 x

Now, on the left hand side, the  x  cancels out the denominator, while, on the right hand side, zero times anything is still zero.

The equation now takes the shape :

  1  = 0

Equations which are never true :

6.2      Solve :    1   =  0

This equation has no solution.

A a non-zero constant never equals zero.

No solutions found

plz mark me as brainliest if this helped :)

3 0
3 years ago
Angle B measures 60. What is the measure of the angle that is complementary to angle B ?
MaRussiya [10]
120 degrees
(180-60=120)
8 0
3 years ago
Read 2 more answers
Other questions:
  • What is the area of the composite figure? units2
    14·2 answers
  • A cake decorator rolls a piece of stiff paper to form a cone. She cuts off the tip of the cone and uses it as a funnel to pour d
    6·1 answer
  • The state of Ohio has several statewide lottery options. One of the simpler ones is a "Pick 3" game in which you pick one of the
    13·1 answer
  • Hi there can anyone help me with this please
    9·2 answers
  • In 2008, the Centers for Disease Control and Prevention reported that 34% of adults in the United States are obese. A country he
    6·1 answer
  • PLEASE HELP ASAP 15 POINTS
    8·1 answer
  • PLSSSS HELPPPP I WILLL GIVE BRAINLIEESTTT!!!!!!!!!! PLSSSS HELPPPP I WILLL GIVE BRAINLIEESTTT!!!!!!!!!!
    10·1 answer
  • ????‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎
    10·2 answers
  • The value of one of Kevin's baseball cards was $6.00 when he first got it. The value of this card is now $15.00. What is the per
    5·1 answer
  • Use this graph of g to find the solutions to g(x)=2
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!