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
mamaluj [8]
2 years ago
13

PLEASE I NEED HELP QUICKLY!!! Find the solution for the given system of equations in the form (x,y).

Mathematics
2 answers:
adelina 88 [10]2 years ago
4 0

Solution:

<u>Note that:</u>

  • Given equations: -x + y = 8 and 7x + 3y = -16

<u>Solving the system of equations to find the value of x and y:</u>

  • 7(-x + y = 8)

        7x + 3y = -16

  • -7x + 7y = 56

        7x + 3y = -16

  • 10y = 40
  • => y = 40/10 = 4

<u>Substituting the value of y into any equation to find the value of x:</u>

  • 7x + 3y = -16
  • => 7x + 3(4) = -16
  • => 7x + 12 = -16
  • => 7x = -16 - 12
  • => 7x = -28
  • => x = -28/7 = -4

<u>Putting the values in the form (x,y):</u>

  • (x,y) ⇒ (x = -4,y = 4) ⇒ (-4,4)

Correct option is D.

goblinko [34]2 years ago
3 0

Answer:

  • (4, - 4)

Step-by-step explanation:

<u>Given system:</u>

  • -x + y = 8
  • 7x + 3y = - 16

<u>Multiply the first equation by 7 and add up the equations:</u>

  • -7x + 7y + 7x + 3y = 7*8 - 16
  • 10y = 40
  • y = 4

<u>Find y:</u>

  • -x + 4 = 8
  • -x = 4
  • x = - 4
You might be interested in
Solve for x -6x + 7 &gt; 1
Elenna [48]

the answer is 6/5

-5x>-6

x>-6/-5

x>6/5

5 0
3 years ago
Read 2 more answers
3y-x=3 and x is four times the value of y what is the value of x-y?
Aleonysh [2.5K]

Answer:

x - y = -9

Step-by-step explanation:

from the equation

3y - x = 3

and x is four times the value of y

i.e  x = 4y

put x  = 4y into the first equation

we have;

3y  - 4Y = 3

-Y = 3

Divide both sides by -1

we have

y = -3

so put y = -3 in the 2nd equation

i.e x = 4y

x = 4 × -3

x = -12

therefore x = -12 and y = -3

so tho find x - y

we have

-12 - (-3)

= -9

therefore x - y = -9

7 0
3 years ago
What is the value of x?<br><br><br><br> Enter your answer in the box.
hoa [83]
The answer is x = 9, hope this helps- mark brainliest if you can please thanks
4 0
3 years ago
Read 2 more answers
A survey was conducted to determine the favorite snack food of 300 shoppers at a grocery store. The circle graph shows the resul
lapo4ka [179]

Answer: 30

Step-by-step explanation:

8 0
3 years ago
I need your help please!
irga5000 [103]

Answer:

Step-bye-step explanation:

3/10 inch = 7/8miles

1inch = 7/8÷ 3/10 miles

= 7/8 × 10/3

= 35/12miles

= 2 11/12

3 0
3 years ago
Other questions:
  • Olivia ties 2.5 feet of ribbon onto one balloon. How many yards of ribbon does Olivia need for 18 Balloons? plz work it is due
    11·1 answer
  • Find the probability of rolling a prime number on a dice
    10·1 answer
  • What expression represents the sum of 8 and twice a number
    9·1 answer
  • Please help me
    7·1 answer
  • the sum of three numbers is 45. the second of the three numbers is three more than twice the first number, x. the third number i
    6·2 answers
  • Clara pays $76 for 8 guitar lessons. How much would 10 guitar lessons cost? Enter your answer in the box.
    12·1 answer
  • Suppose that we examine the relationship between high school GPA and college GPA. We collect data from students at a local colle
    13·1 answer
  • What transformation takes the graph of g(x) = x2 – 5 to the graph of<br> h (x) = x² – 1
    13·1 answer
  • Find the m∠RQP of the triangle
    12·1 answer
  • Daniel has $30 in a savings account that earns 5%
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!