Ateacher asked students in his class if they had any brothers or sisters. the results are shown below. what is the chance of randomly selecting someone from this group with a brother given that they have a sister?

p(brother|sister)

group of answer choices

5/12

5/17

5/9

5/14

X/y + 4y/x divided by x/y - 2y/x explain as in depth as you can how you simplfied the fractions. i don't know where to start on this : /

How can you determine if a representation is a function or not ? answer this

Indicate whether each statement is true or false, assuming that the "or" in the sentence means the inclusive or. then indicate whether the statement is true or false if the "or" means the exclusive or. (a) february has 31 days or the number 5 is an integer. (b) the number pi is an integer or the sun revolves around the earth. (c) 20 nickels are worth one dollar or whales are mammals. (d) there are eight days in a week or there are seven days in a week. (e) january has exactly 31 days or april has exactly 30 days.