Answer:

Step-by-step explanation:


- In order to combine these two equations, an idea you need to keep in mind is finding a way of setting these equations as equal to each other. I saw that each equation shared a common value,
. In this case, we need to isolate
in the first equation so that both equations
.



- With this, we now know that both
and
are equal to
, so we can set them equal to each other.



- Reply to this if anything I'm saying or doing is confusing in any way, or if you find a mistake. :) Solve for
.







- Hopefully this answer is correct AND makes sense in terms of how I achieved it. Again, reply to this with any questions or mistakes I made and I'll do my best to answer or fix them.
You might need to give out the choices, if there are any. thanks for asking.
Answer:
yes it is right
Step-by-step explanation:
14x+7=-91
-7=-91-7
14x=-98
*14 *14
x= -1372
53 cards in total....2 black kings
P(picking a black king) = 2/53 = 0.037 = 3.7%