An urn contains one white chip and a second chip that is equally likely to be white or black. a chip is drawn at random and returned to the urn. then a second chip is drawn. what is the probability that a white appears on the second draw given that a white appeared on the first draw? (hint: let wi be the event that a white chip is selected on the ith draw, i = 1, 2. then p(w2|w1) = p(w1∩w2) p(w1) . if both chips in the urn are white, p(w1) = 1; otherwise, p(w1) = 1/2)

Answer: d. 39 cmin the diagram, the approximate length of the minor arc de is 39 centimetres.step-by-step explanation: the formula for the length of an arc in a circle is as displayed below.let the length of the minor arc de = xx = 2( pi )r × angle of sector / 360°from this, we will substitute the values given from the problem into the formula to obtain the length of the minor arc de.x = 2( pi )r × angle of sector / 360°r = radius = 25cmpi as an approximate value = 3.14angle of sector = 120°x = 2( 3.14 )( 25 ) × 120° / 360°x = 157 × 1 / 4x = 39.25x = 39 ( rounded to the nearest whole number as an approximate value )