4x – 9y = 7
–2x + 3y = 4
what number would you multiply the second equation by in order to eliminate the x-terms when adding to the first equation?

By 2.

Step-by-step explanation:

You need to eliminated the x-terms, so the first step is to focus only in those terms.

So yo have 4x and -2x, since you are thinking in eliminate then you have this equation>

Note that we dont put the x variable, since we are studying its coefficients in the equations system.

Solving for K, Gives us that K=2

So.

Multiplying the second equation by 2 results in

When you put them together, it gives you the following

and the final equation is

giving you the answer for y, that is

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%

step- i d k and i d c : )

you: : 0

bye