Eight people were asked if they have a brother or sister. This vent diagram shows the results. A person is randomly chosen from those shown in the vent diagram. Let event A= The person has a sister. Let event B= The person has a brother. What does p(B/A)=0.25 mean in terms of the vent diagram

its not b

step-by-step explanation:

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92

30.5*10=350$

you have to multiply the number without the decimal point then add it later but if its tenn u must move the place value of the decimal point 1 to the right.