18 of the last 30 cars cars that passed you were black. what is the probability the next car will be black?

P ( black car) = 3/5

Step-by-step explanation:

P( black car) = black cars/ total cars

                     = 18/30

                     = 3/5

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

160 cm

step-by-step explanation:

you have to add all the sides together