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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
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Cluster: Each group is cluster, and when a cluster is sorted, every member of the group is sample. This is the correct answer.

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3 years ago
(3^5 x 3^7) = 3^35 is this true
ella [17]

Answer:

False

Step-by-step explanation:

you have to solve the problems inside the parentheses first so you would have to multiply everything inside so no ur wrong

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3 0
3 years ago
Rachael walked 214 miles in 15 minutes, and Julie walked 334 miles in 25 minutes. Could you tell me who is faster, please?
katrin [286]

Answer:

Rachael is faster.

you can tell by finding the unit amount.

Step-by-step explanation:

I can tell by finding the unit amount. (miles per minute)

Rachael:

214/15 = 14.2666666667  or about 14.27

Julie:

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5 0
2 years ago
Which of the following could be the numbers of left-handed and right-handed students at West Junior
nordsb [41]

Answer:

The anwers Is C and E.

Step-by-step explanation:

A relationship between two quantities is proportional if the ratio between those quantities is always equivalent.

Hint #22 / 4

Let's look at the ratio between right- and left-handed students at East Middle School.

6

0

9

right

5

8

left

=

1

0

.

5

right per left

58left

609right

​  =10.5 right per left

At East Middle School, there are

1

0

.

5

10.5 right-handed students for every left-handed student.

Hint #33 / 4

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3 0
2 years ago
A car used 11 1/2 gal of gasoline on a 345-mile trip. How many miles can this car travel on 1 gal of gasoline? ____mi
lyudmila [28]

Answer:

The answer to your question is: 30 miles can the car travel.

Step-by-step explanation:

Data

gasoline used = 11 1/2 gal

distance = 345 mile-trip

distance travel with 1 gal = ?

Process

Convert 11 1/2 to a improper fraction    11 1/2 = 23/2

Rule of three

                            23/2 gal -----------------------  345 miles

                              1 gal      ----------------------   x

                          x = (1 x 345) / 23/2

                          x = 345 / 23/2

                          x = 690/ 23

                          x = 30 miles

8 0
2 years ago
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