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Nataliya [291]
3 years ago
8

Which equation has (2, -1) as a solution?

Mathematics
1 answer:
Andrew [12]3 years ago
8 0
D) Y=-2x + 1
I think this is the right answer :)
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What is the formula for a pyramid?
densk [106]

Answer:

Image result for what is the formula for a pyramid in a example

The general formula for the total surface area of a regular pyramid is T. S. A. =12pl+B where p represents the perimeter of the base, l the slant height and B the area of the base.

3 0
3 years ago
The mass of a block of stone is 2,000 kg. If the block has a volume of 0.5m
rodikova [14]
Density = Mass / Volume = 2000/0.5
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4 0
4 years ago
The x coordinate of the solution to the system of equations y=x+4 and 3y=-2x+2
Vera_Pavlovna [14]
<h2>Hello!</h2>

The answer is:

The x-coordinate of the solution to the system of equations is:

x=-2

<h2>Why?</h2>

We can solve the problem writing both equations as a system of equations.

So, we are given the equations:

\left \{ {{y=x+4} \atop {3y=-2x+2}} \right.

Then, solving by reduction we have:

Multiplying the first equation by 2 in order to reduce the variable "x", we have:

\left \{ {{2y=2x+2*4} \atop {3y=-2x+2}} \right.

5y=2x-2x+8+2\\\\5y=8+2\\\\y=\frac{10}{5}=2

Now, substituting "y" into the first equation, to isolate "x" we have:

y=x+4\\\\2=x+4\\\\x=2-4=-2

Hence we have that the x-coordinate of the solution to the system of equations is

x=-2

Have a nice day!

3 0
3 years ago
Read 2 more answers
Which angles are adjacent gbm and fbc or cbx and fbc or xbg and fbc or mby and fbc
Natalija [7]

Answer:

CBX and FBC

Step-by-step explanation:

adjacent angles are right next to each other

7 0
3 years ago
Please help sorry I’m dumb
Nady [450]
The answer is x = 18
6 0
3 years ago
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