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zlopas [31]
2 years ago
14

20a-16=12(3-a), then a

Mathematics
1 answer:
Gala2k [10]2 years ago
7 0

Answer: a = 13/8 or 1 5/8

Step-by-step explanation:

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-6x-6y =18 6x-3y=27 its supposed to be solving systems by elimination by adding or subracting, im really confused.
Lera25 [3.4K]

Answer:

y = -5

x = 2

Step-by-step explanation:

The computation is show below:

Given that

-6x - 6y = 18

6x - 3y = 27

Now if we solved both equation so

-9y = 45

y = -5

And, x is

-6x - 6(-5)  = 18

-6x + 30 = 18

-6x = 18 - 30

-6x = -12

x = 2

3 0
3 years ago
I need help please and thank you
dem82 [27]
So we see that the ratio between the two octagons is 7:1, since 28/4=7 so what we do next is multiply the values of the smaller octagon by 7. But that’s the long way. There’s actually a shortcut by multiplying the perimeter of the smaller octagon, 34, by 7. This in turn equals 238.
6 0
3 years ago
Read 2 more answers
Please help <br><br>y≥1/3x-3​
zloy xaker [14]

Answer:

B, the one with the line and shaded the top on the right side. (The one that goes to 7 on the x axis).

Step-by-step explanation:

First I find which graph as y -intercept of -3, which is all of them.

Next, I find with graph has a slope of 1/3. (rise 1 run 3). Only B and D has a slope of 1/3 (The ones that has a less steep graph. )

Then, I use the coordinate (0,0) to see which side the graph shades. I plug it into the inequality. (0)≥1/3(0)-3​. Solve. Is 0 greater than -3. YES! so we shade the part where (0,0) is shaded which is B.

6 0
3 years ago
Find the value of n.<br>M<br>12n = 12​
gtnhenbr [62]
The value of n is 2, because if u do the multiplication then ur fine
8 0
3 years ago
4x - 2 = 3x + 3<br> Solve for X<br><br> Please show all your work.
Kobotan [32]

Answer:

x=5

Explanation:

We need to get x to stand by itself on one side of the equation.

4x-2 = 3x+3  ← add 2 to each side

4x = 3x+5 ← subtract 3x from each side

x = 5 ← final answer

7 0
3 years ago
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