Please help me I need the answer and work

(1, -2)

Step-by-step explanation:

So we can work straight away

The elimination method deals with eliminating one variable so that you can find the other, then substituting that back in to find the one we eliminated originally. So, let's add our two equations together:

    9x - 3y = 15

+  3x + 3y = -3

   12x         = 12

So now that we've reached a new equation, 12x = 12, we can divide both sides by 12 and get that:

x = 1

Substituting this back into the second equation (though you could sub it into either one):

3(1) + 3y = -3

3 + 3y = -3

3y = -6

y = -2

Therefore, x = 1 and y = -2, also represented as (1, -2)

Hope this helps!

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%