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
vampirchik [111]
3 years ago
5

Solve the system of equations using substitution

Mathematics
1 answer:
Andru [333]3 years ago
7 0

Answer:

x = 136/11 , y = 68/11

Step-by-step explanation:

Solve the following system:

{6 x - y = 68

2 y = x

Hint: | Choose an equation and a variable to solve for.

In the second equation, look to solve for x:

{6 x - y = 68

2 y = x

Hint: | Reverse the equality in 2 y = x in order to isolate x to the left hand side.

2 y = x is equivalent to x = 2 y:

{6 x - y = 68

x = 2 y

Hint: | Perform a substitution.

Substitute x = 2 y into the first equation:

{11 y = 68

x = 2 y

Hint: | Choose an equation and a variable to solve for.

In the first equation, look to solve for y:

{11 y = 68

x = 2 y

Hint: | Solve for y.

Divide both sides by 11:

{y = 68/11

x = 2 y

Hint: | Perform a back substitution.

Substitute y = 68/11 into the second equation:

{y = 68/11

x = 136/11

Hint: | Sort results.

Collect results in alphabetical order:

Answer: {x = 136/11 , y = 68/11

You might be interested in
Right angle are known as the
marissa [1.9K]
Right angle are known as exactly 90 degrees corresponding to a quarter turn.
8 0
3 years ago
Read 2 more answers
Match the two numbers with their least common multiple (LCM).
timurjin [86]

Answer:

  • 8 and 4: A
  • 8 and 6: C
  • 8 and 10: B

Step-by-step explanation:

<u>8 and 4:</u>

Multiples of 8: 8, 16, 24

Multiples of 4: 4, 8, 12, 16

<u>8 and 6:</u>

Multiples of 8: 8, 16, 24

Multiples of 6: 6, 12, 18, 24

<u>8</u><u> </u><u>and</u><u> </u><u>10</u><u>:</u>

Multiples of 8: 8, 16, 24, 32, 40

Multiples of 10: 10, 20, 30, 40

4 0
3 years ago
A coin flipped 14 times and it comes up heads 10 times what is the experimental probability of the coin’s coming up heads ?
Gekata [30.6K]

The answer is B.

If a coin is flipped 14 times and lands on heads 10 times the fraction would equal to 10/14.

10/14 simplifies to 5/7.

3 0
3 years ago
Read 2 more answers
-2=-(n-8) what would be the answer ​
Alexeev081 [22]

Answer:

n=10

Step-by-step explanation:

-2=-n+8

-n=-10

n=10

3 0
3 years ago
Arithmetic of functions
Rzqust [24]

Its B.

If f(x)=4x+1 and g(x)=x^2-5 then, (\frac{g}{f})(x)=\frac{x^2-5}{4x+1} and x\neq-\frac{1}{4} because if x were -\frac{1}{4} then you would have division by 0.

Hope this helps.

5 0
3 years ago
Other questions:
  • A Ferris will can accommodate 45 people in 15 minutes. How many people could ride the Ferris wheel in three hours?
    15·1 answer
  • What is the equation of a line with a slope of -1 and a y-intercept of -5​
    14·1 answer
  • 2. The radius of a circle is 9 cm. Find the area of the circle
    12·1 answer
  • What are some non-price level factors that cause the aggregate demand curve to shift left or right (and in which direction will
    8·1 answer
  • SOMEONE PLEASE HELP ME!!!!DONT SKIP IT PLEASE!!
    11·1 answer
  • Name all the quadrilaterals that have the given property.
    13·2 answers
  • Identify terms, coefficients, factors, and the constant: 5(2x + 4) + 3x
    6·2 answers
  • Explanation<br> Solve using the quadratic formula.<br> 3q2 + 7q = 0
    10·1 answer
  • Why is apr an important tool for consumers
    10·1 answer
  • A pound of chocolate costs 6 dollars. John buys p pounds. Write an equation to represent the total cost c that John pays.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!