In a class of students, the following data table summarizes how many students have a brother or a sister. What is the probability that a student has a sister given that they have a brother?

Has a brother Does not have a brother

Has a sister 5 7

Does not have a sister 11 4

0.185

Step-by-step explanation:

Given:

                                       Has a brother            Does not have a brother

Has a sister                            5                                        7

Does not have a sister          11                                        4

So, The total number of the students in the class = 5 + 7 + 11 + 4 = 27

The number of student has a sister given that they have a brother = 5

∴ The probability = 5/27 = 0.185

The probability that a student has a sister given that they have a brother = 0.185

the answer is two. hope this !

hello from mrbilldoesmath!

answer:   x (x+6)^2, choice b

discussion:

factor x out of the equation:

x^3 + 12x^2 + 36x = x (x^2 + 12x + 36).

note that 6+6 = 12 and 6*6 = 36 so the above factors into:

x (x+6)^2

which is choice b

you,

mrb