Answer:
C. 11
Step-by-step explanation:
here's my explanation its down below, i wrote it on paper
use the venn diagram in Part A to find each probability when annie randomly chooses one member of the doubles club. (need help w
ith part A and part B)
1 answer:
If we assume the club membership includes
then the blanks in the Juniors circle must be filled in with 6 and 8 (with the 8 going in the overlap with girls). The remaining blank in the Girls circle must be filled in with 12, the number of senior girls. The blank outside both circles is the number of senior boys (members who are not juniors and not girls), 16.
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The ratio of = - 34
How to solve such questions?
Such Questions can be easily solved just by some Algebraic manipulations and simplifications. We just try to make our expression in the form which question asks us. This is the best method to solve such questions as it will definitely lead us to correct answers. One such method is completing the square method.
Completing the square is a method that is used for converting a quadratic expression of the form to the vertex form
. The most common application of completing the square is in solving a quadratic equation. This can be done by rearranging the expression obtained after completing the square:
, such that the left side is a perfect square trinomial
=
= (Completing Square method)
=
On comparing with the given equation we get
p = - and q =
∴ =
= - 34
Learn more about completing the square method here :
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