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sashaice [31]
3 years ago
10

Please help ASAP

Mathematics
1 answer:
aliya0001 [1]3 years ago
4 0
It should be multiplied by the opposite of the coefficient of y in the first equation, hence
  B)) -2

_____
Actually, it depends on your choice of next step. Multiplying by -2 lets you add the two equations. Multiplying by 2 means you need to subtract one equation from the other. We usually find addition easier, so we would usually choose -2, but either can work. It depends on whether you like to add negative numbers or subtract positive ones.
You might be interested in
What is the volume of a cylinder with r=3 and h=10
____ [38]

This is one of those questions where, if you know the formula, it's easy,
and of you don't know the formula, there's no way.

In fact, the whole purpose of the question is to help you remember the formula.

The volume of a cylinder is

                           (pi) x (the radius)² x (the height).

For this particular cylinder, that's

                            (pi) x (3)² x (10) =

                           (pi) x (9) x (10)  =  90 pi cubic units.

If you use (3.14) for (pi), then that's  <em>282.6 cubic units</em>.
 
4 0
4 years ago
Is the following function even, odd, or neither?<br> 1<br> 4 – 22
olga2289 [7]

Answer:

I would think neither after graphing it. Sorry if i'm wrong.

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
X - 2y = -10 find the x and y intercepts
jok3333 [9.3K]
The Y intercept is (0,5)
The X intercept is (0,-10)
8 0
4 years ago
Solve r = 1/2m^2p for p
hoa [83]
You just have to arrange the equation such that the p is the only term at the left hand side of the equation. Express it in terms of r and m. 

r = 1/2*m²*p
Divide both left and right hand side equations by 1/2*m²
p = r/(1/2 *m²)
Take the reciprocal of 1/2 and multiply it. The final answer is:
p = 2r/m²
7 0
4 years ago
PLEASE NO LINKS, I will report you.
FromTheMoon [43]

Answer:

for 18 x is 6 and for 20 it is 11

Step-by-step explanation:

For 18, since -1+2x and 5+x is the same thing, set up and equation. WE can simplify to -1+x=5 and then we get x=6

For 20, 18 is 11 since 18=-4+2x. If we simplify we get 22=2x then we can use algebra to say that x=11

Hope this helps :)

7 0
3 years ago
Read 2 more answers
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