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
melomori [17]
3 years ago
12

Please explain how you got your answer, I don't quite understand how to do this.

Mathematics
2 answers:
Sliva [168]3 years ago
7 0
<h2><u>Question :-</u></h2>

Solve for y in the two equations below using substitution.

  • 2x - 8y = 6
  • -2x + 2y = 7

<h3>____________________</h3>

<h2><u>Solution :-</u></h2>

<h3><u>Given Information :-</u></h3>

  • <u>Equation 1 ➢</u> 2x - 8y = 6
  • <u>Equation 2 ➢</u> -2x + 2y = 7

<h3><u>To Find :-</u></h3>

  • Solve for y in the two equations.

<h3><u>Calculation :-</u></h3>

<u>Equation 1 ➢</u> 2x - 8y = 6

<u>Equation 2 ➢</u> -2x + 2y = 7

<em><u>Adding both equations together, by combining similar terms, We get, </u></em>

  • 2x + -2x = 0
  • -8y + 2y = -6y
  • 6 + 7 = 13

<em><u>When we combine the terms, We get,</u></em>

⇒ -6y = 13

<em><u>Now, solving for y, by divide Right Hand Side & Left Hand Side by -6, We get,</u></em>

⇒ y = \sf \frac{13}{-6}

⇒ y = \sf \frac{-13}{6}

∴ The value of y is \bf \frac{-13}{6}

<h3>____________________</h3>

<h2><u>Final Answer :-</u></h2>

The value of y is \bf \frac{-13}{6}

Hence, Option C. \bf \frac{-13}{6} is correct answer.

<h3>____________________</h3>
sp2606 [1]3 years ago
3 0

2x - 8y = 6

-2x + 2y = 7

Add the two equations together by combining like terms:

2x + -2x = 0

-8y + 2y = -6y

and 6 + 7 = 13

So when you combine the terms you end up having:

-6y = 13

Now solve for y by dividing each side by -6:

y = 13/-6

Rewrite by moving the negative sign in front of the fraction to get

y = -13/6

The answer is C.

You might be interested in
Please help me witht this
iogann1982 [59]

Answer:

B,D

Step-by-step explanation:

the independent variable is what is being changed or manipulated and he is changing how many plays he gets.  the amount of yards he gets is a result of the amount of plays so thats the dependent variable.  

7 0
2 years ago
Read 2 more answers
At Computer Central, the cost of renting a computer is $45 plus $35 per day. The total cost can be represented by the equation y
Thepotemich [5.8K]
Simple, since your equation is y=35x+45, it's quite simple to see what is the y-intercept.
It's written in y=mx+b form, the b being the y-intercept.

Thus, your y-intercept, is 45.
4 0
3 years ago
May I please receive help?
Artyom0805 [142]

4, -1/4 -1,

we can do this simply by

(y2-y1)/(x2-x1)

and simplifying

6 0
2 years ago
Demarco has a piece of fabric 6yd long. He uses a piece 3yd long. He cuts the rest into strips that are each 3\4 yd long. How ma
Kobotan [32]

Answer: 4

Step-by-step explanation:

Hi, to answer this question, first, we have to subtract the amount of fabric used (3yd) to the total fabric that Demarco has (6yd)

6 -3 =3yd

Finally, we have to divide the result by the length of each strip piece (3/4yd)

3÷ 3/4= 4 pieces  

There are 4 3/4 yd long strips.

Feel free to ask for more if needed or if you did not understand something.

4 0
3 years ago
can someone help me with the circumferences and other stuff on this picture please (zoom out to see the full picture)
Daniel [21]
The corcumference C of a circle is C= 2 x pie x radius
So radius= C/(2pie)

Volume of cylinder= pie x r(squared) x h
8 0
3 years ago
Other questions:
  • The waiters poured 160 eight-ounce glasses of water at the banquet. How many gallons is this? Show your work.
    10·1 answer
  • What does M, ,b and x &amp;y stand for
    13·2 answers
  • Yancy has a board 25 feet long. He wants to cut the board into 4 1/2 foot lengths. Into how many 4 1/2 foot lengths can he cut i
    12·1 answer
  • Who's good at Algebra? I have a few Questions about somethings on my home work.....
    5·2 answers
  • A population of insects grows exponentially, as shown in the table. Suppose the increase in population continues at the same rat
    9·1 answer
  • HELP FAST PLS ILL LOVE U FOREVER &lt;3 Angle ABC is 47 degrees. What is the the measure of angle CBD?
    11·2 answers
  • Students were asked to choose their favorite sport, and 7/9 chose either
    5·1 answer
  • Ayuda la otra es otra y después de la y​
    8·1 answer
  • 7, 2, x, 15, 20, 8, 14, 29; median: 13 x = ?
    9·1 answer
  • A translation is shown on the grid below. On a coordinate plane, triangle A B C has points (negative 4, 2), (negative 4, negativ
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!