Answer:
n[total]=25
n[top finishers]=8
the number of possible outcome
=
outcomes
Step-by-step explanation:


and,

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☆Find the 

Here,
BC =AC
so,
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we know that,

But
(Ģìvéñ)
so..







But...

soo,


⠀⠀⠀⠀


Answer:
(-3,-8)
Step-by-step explanation:
okay so what we can do here is elimination
we can do this first by multiplying the entire second equation by 2
so then it would become
2(5x-2y=1)
10x-4y=2
now we can add the two equations together which will eliminate y
so
-8x+4y=-8 plus
10x-4y=2 equals
2x=-6
we did that by combining like terms
next we can simplify that
x=-3
now we can plug that into the equation
-8(-3)+4y=-8
simplify
24+4y=-8
4y=-32
y=-8
our answer would be
(-3,-8)
Answer:
the 3rd one
Step-by-step explanation: