How to solve -3(x+4)=-15
2 answers:
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<h2>Answer with explanation:</h2>
A box contains 12 balls numbered 1 through 12.
Also the ball are drawn without replacement.
a)
The probability that the first ball had a smaller number on it.
i.e. the number on the first ball could be: {1,2,3}
Hence, the probability that the first ball had a smaller number on it is:
b)
The probability that the first ball has a even number on it is:
There are total 6 even numbers {2,4,6,8,10,12}
but 4 can't be considered as it comes on the second draw, so we are left with just 5 balls with even number.
Hence, the probability is:
FOIL is an ancronym to help you remember to multiply each term. basically it's for people who can't distribute good
anwya
FOIL stands tells you which terms to mulitply, you then add the results up
F=First terms
O=Outer terms
I=Inner terms
L=Last terms
so
(x-2)(x-3)
First: x times x =
Outer: x times -3=-3x
Inner: -2 times x=-2x
Last: -2 times -3=6
now add them all up
answer is the second option