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Stella [2.4K]
2 years ago
5

When solving by substitution; you first must

Mathematics
1 answer:
Lostsunrise [7]2 years ago
8 0

B because thd mbajdidiidid

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7)
zysi [14]

Answer:

C

Step-by-step explanation:

3 0
3 years ago
The weight of a tree is doubling every 3 years and how many years will be way of the tree be 1600% of its weight now
BARSIC [14]
Doubling every 3 years, meaning 200% every 3 years.

1600 \div 200 = 8
8 \times 3 = 24
The answer is 24 years.

Hope this helps. - M
6 0
3 years ago
Find the value of the missing variable
Lady_Fox [76]
This should explain it... you need to use a special right triangle! Let me know if you have any questions

5 0
3 years ago
Use addition to solve the linear system of equations. Include all of your work in your final answer. \(\left\{ \right.\) 3x-y=6
ad-work [718]

Answer:

Solving the given linear system, we get x = 1 and y = -3.

The solution set is: (1,-3)

Step-by-step explanation:

We need to solve the linear system of equations.

3x-y=6 \\y=x-4

We can write second equation y=x-4  as: -x+y=-4

Let:

3x-y=6--eq(1)\\ -x+y=-4--eq(2)

Now, Adding equation 1 and 2

3x-y=6\\ -x+y=-4\\--------\\2x+0y=2\\2x=2\\x=\frac{2}{2}\\x=1

So, we get x = 1

Now, put value of x in second equation to find value of y:

y=x-4\\Put\:x=1\\y=1-4\\y=-3

So, we get y = -3

Solving the given linear system, we get x = 1 and y = -3.

The solution set is: (1,-3)

4 0
4 years ago
4x-8y=12<br>14+2x=-6y<br>plz help​
sesenic [268]

Answer:

x=2.7142 y=-2.8571,

Step-by-step explanation:

given 4x-8y=12............(1)

14+2x=-6y

2x+6y=-14..........(2)

from equ (2) multiply by 2

4x+12y=-28............(3)

substruct (1) and (3)

4x-8y-4x-6y=12-(-28)

-14y=40 ,y=\frac{40}{-14}=-2.8571

y=-2.8571 put in equ (1)

4x-8(-2.8571)=12

4x=12-22.857=10.8571

x=\frac{10.8571}{4}

x=2.7142

4 0
3 years ago
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