(3_4sin²a) (sec²_4tan²a) =(3-tan²a)(1-4sin²a)

Being male and preferring brand A are independent.

Because: if independent then P(male and brand A) = P(male) P(brand A) = 0.48 * 0.75 = 0.36 and that is true (= value in the table)  

P(male|brand A)=0.36/0.75=0.48 = P(male)

So the two answers are:

(1) "independent"

(2) =

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answer: answer

step-by-step explanation:

hello from mrbilldoesmath!

answer:

x - 3

discussion:

x^2 - 9 = (x-3) (x+3)   so

(x^2-9)/ (x + 3) = x-3

you,

mrb