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Sophie [7]
3 years ago
7

Solve: 16 + x = 12 then you can get the brainiest.

Mathematics
1 answer:
alexgriva [62]3 years ago
4 0
The answer would be -4 because when you add a positive and a negative it’s like subtracting.
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Which is true about the solution of x^2/2x-6=9/6x-18
Ymorist [56]

Answer:

18

Step-by-step explanation:

5 0
3 years ago
Help meeeeeeee pleaseeee!!!
Lesechka [4]

Answer:


Step-by-step explanation:


3 0
2 years ago
9x−9y=0 3x−4y=10 solve by elimination
NikAS [45]

Answer:

(-10,-10)

Step-by-step explanation:

9x-9y=0

3x-4y=10

In elimination, we want both equations to have the same form and like terms to be lined up.  We have that.  We also need one of the columns with variables to contain opposites or same terms. Neither one of our columns with the variables contain this.  

We can do a multiplication to the second equation so that the first terms of each are either opposites or sames. It doesn't matter which.  I like opposites because you just add the equations together. So I'm going to multiply the second equation by -3.

I will rewrite the system with that manipulation:

9x-9y=0

-9x+12y=-30

----------------------Add them up!

0+3y=-30

     3y=-30

       y=-10

So now once you find a variable, plug into either equation to find the other one.

I'm going to use 9x-9y=0 where y=-10.

So we are going to solve for x now.

9x-9y=0 where y=-10.

9x-9(-10)=0  where I plugged in -10 for y.

9x+90=0  where I simplified -9(-10) as +90.

9x     =-90 where I subtracted 90 on both sides.

x=       -10 where I divided both sides by 9.

The solution is (x,y)=(-10,-10)

3 0
2 years ago
A party rental company chairs and tables for rent. The total cost to rent 2 chairs and 12 tables is $105. The total cost to read
Luden [163]

Answer:

Step-by-step explanation:

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2c+12t-20c-12t=105-132

-18c=-27 dividing each side by -18

c=1.5, making 2c+12t=105 become

2(1.5)+12t=105

12t=102

t=8.5

So each chair costs $1.50 and each table costs $8.50

7 0
2 years ago
Which classification best describes the following system of equations? X=5, y=6, -x-y+z=0
PolarNik [594]
I don't see any answer choices, but because it already gives you x and y, all you have to do is plug them into the equation.
-(5)-(6)+z=0
combine like terms
-11 + z = 0
add 11 to both sides
z = 11 is your answer
7 0
3 years ago
Read 2 more answers
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