Iwill mark you brainliest if you get all 4 answers right. i literally wasted 91 points for this question. i need on 4 questions that'll be in the link. they are multiple choice so me. i am beyond desperate.

6. ○ [-6, 8]

5. Fourth bubble

3. ○ No Solution

1. ○ [5, 0]; Value is 35

Step-by-step explanation:

6.

{-8x - 8y = -16

{6x - 9y = -108

¾[-8x - 8y = -16]

{-6x - 6y = -12 >> New Equation

{6x - 9y = -108

-15y = -120

-15-15

y = 8 [Plug this back into both equations above to get the x-coordinate of -6]; -6 = x

1. All you do is take each answer choice and plug it into each function to confirm their authenticities.

5. From what I have seen about matrices, just write then side-by-side as you see it.

3.

{-3x - 4y - 3z = -7

{2x - 6y + 2z = 3 ←

{5x - 2y + 5z = 9 ←

{2x - 6y + 2z = 3

{5x - 2y + 5z = 9

-⅓[2x - 6y + 2z = 3]

{-⅔x + 2y - ⅔z = -1 >> New Equation

{5x - 2y + 5z = 9

4⅓x + 4⅓z = 8

- 4⅓z -4⅓z

4⅓x = -4⅓z + 8

4⅓4⅓

x = -z + 1 11⁄13

5[-z + 1 11⁄13] - 2y + 5z = 9

-5z + 93⁄13 - 2y + 5z = 9

9 = 9 3⁄13 - 2y

-9 3⁄13 -9 3⁄13

-3⁄13 = -2y

___

-2-2

3⁄26 = y

5[-z + 1 11⁄13] - 2[3⁄26] + 5z = 9

-5z + 9 3⁄13 - 3⁄13 + 5z

9 = 9

2[-z + 1 11⁄13] - 6[3⁄26] + 2z = 3

-2z + 3 9⁄13 - 9⁄13 + 2z = 3

3 = 3

* So you see, ever since we defined y and partially defined x, the z-terms keep canceling each other out, therefore indicating that we have NO SOLUTION.

*** I apologize that I have not had the time to teach myself how to solve using matrices, which I have heard of, but was never taught it. I hope you can understand my entire explanation.

I am delighted to assist you anytime.

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm