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White raven [17]
3 years ago
12

PLEASE HELP ME I WILL GIVE U CREDIT ​

Mathematics
2 answers:
Ket [755]3 years ago
8 0

Answer:

1. x=60

2.x=5

3.x=8

4.x=10

Step-by-step explanation:

im assuming you want to find x value for each.

Ipatiy [6.2K]3 years ago
5 0

Answer:

1. 60

2. 5

3. 8

4. 10

Step-by-step explanation:

1. 115+(x+5)=180

x=60

2. 180-136=7x+9

35=7x

x=5

3. 37=6x-11

6x=48

x=8

4. 180-142=2(x+9)

38=2x+18

20=2x

x=10

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It can be found by using the formula,

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7 0
3 years ago
Solve for X and Y: <br> Y=2+7x and -2x+6y=-28
Furkat [3]

Answer:

x=-1 and y=-5

Step-by-step explanation:

ሰላም!

Given expressions let them given as two equations

  • y=2+7x....... equation (1)
  • -2x+6y=-28..... equation (2)

Thus, substitute y=2+7x into equation (2)

- 2x + 6(2 + 7x) =  - 28 \\

simplify it

- 2x + 12 + 42x =  - 28 \\ 40x + 12 =  - 28

subtract 12 from both sides

40x + 12 - 12 =  - 28 - 12 \\ 40x =  - 40

divide both sides by 40

\frac{40x}{40}  =  \frac{ - 40}{40} \\ x =  - 1

Therefore, as we get the value of x=-1 substitute it to equation (1) and solve for variable y

y = 2 + 7x \\ y = 2 + 7( -1 ) \\ y = 2 - 7 \\ y =  - 5

To be more sure make a cross check on both of the two expressions

Thus,

1) y=2+7x .... substitute y=-5 and x=-1 and check if it is equal

-5=2+7(-1)

-5=2-5

-5=-5

2)-2x+6y=-28... substitute and check

-2(-1)+6(-5)=-28

2-30=-28... (-a)(-b)=ab

-28=-28

Hope it helps!

6 0
1 year ago
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elena-14-01-66 [18.8K]
3(1)^2-3= 0
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4 0
3 years ago
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AfilCa [17]

Answer:

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Step-by-step explanation:

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3 years ago
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Answer:

Step-by-step explanation:

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