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]
2 years ago
12

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

Mathematics
2 answers:
Sliva [168]2 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]2 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
!!!!!!!!!!!!!!!!!!!!!
S_A_V [24]

Answer:

A

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
25x10^6 how do you do this question??
Mazyrski [523]

Answer:

25,000,000x

Step-by-step explanation:

10^6=1,000,000

25*1,000,000x

Mulitipli the numbers: 25 * 1,000,000 = 25,000,000x

7 0
3 years ago
Read 2 more answers
40. In a statistics class of 30 students, there were 13 men and 17 women. Two of the men and three of the women received an A in
Harrizon [31]

Answer:

a) 56.67% probability that the student is a woman

b) 16.67% probability that the student received an A

c) 63.33% probability that the student is a woman or received an A.

d) 83.33% probability that the student did not receive an A.

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

We have that:

30 students

13 men

17 women

2 men that got an A and 11 men that did not get an A.

3 women that got an A and 14 women that did not get an A.

a. Find the probability that the student is a woman.

30 students, of which 17 are women.

P = \frac{17}{30} = 0.5667

56.67% probability that the student is a woman

b. Find the probability that the student received an A.

30 students, of which 5 received an A

P = \frac{5}{30} = 0.1667

16.67% probability that the student received an A

c. Find the probability that the student is a woman or received an A.

30 students, of which 17 are women and 2 are men who received an A. So

P = \frac{19}{30} = 0.6333

63.33% probability that the student is a woman or received an A.

d. Find the probability that the student did not receive an A.

30 students, of which 25 did not receive an A.

P = \frac{25}{30} = 0.8333

83.33% probability that the student did not receive an A.

7 0
3 years ago
Please help me with my math
ValentinkaMS [17]
Im failing math but passing all others im sorry lol
7 0
3 years ago
Dalia is performing transformations on the preimage of a triangle in the coordinate plane. She shifts and the spins the triangle
Zielflug [23.3K]

Answer:

translation, rotation

Step-by-step explanation:

A translation is sliding around or moving around/shifting so the first one is translation. A rotation is spinning it around to a different angle so the second is a rotation. Hope this helps!!

6 0
2 years ago
Other questions:
  • What is the measure of Z if W equals to 116*
    13·1 answer
  • The rate of change is constant in each table. Find the rate of change. Explain what the rate of change means for the situation.
    5·2 answers
  • Carmen is going to buy a pair of sneakers that cost $63 the sales tax rate is 7.5 what is the total cost of the sneakers to the
    11·1 answer
  • Please answer for 10 points
    6·1 answer
  • A groundskeeper needs grass seed to cover a circular field 290 feet in diameter
    7·2 answers
  • Which statement is an example of the Identity Property of Multiplication?
    10·1 answer
  • I need help with number 4 . Can I please get the answer as soon as possible?
    7·1 answer
  • Find the volume.<br> h = 10 cm<br> rea<br> 144 cm
    9·1 answer
  • Ella gana $20 por hora como carpintera y $25 por hora
    10·1 answer
  • 4. How many mugs could you make with 360 spoonfuls of cocoa mix?​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!