Which of these pairs of events are dependent? a. you flip a coin and get tails. you flip it a second time and get heads. b. you pull your friend's name out of a hat that holds 20 different names, replacename, then draw out your friend's name again. c. you spin a spinner divided into five equal parts and is numbered 1-5. you get a 3 on the first spin, and then spin again and get a 2 on the second spin. d. you remove a black sock from a drawer without looking, then remove another blacksock.

d

Step-by-step explanation:

a, b, and c are independent, because they don't necessarily affect the probability of each other.

answer: $201

step-by-step explanation: to get the answer, you first get 3 nieces that he sold and multiply it by 67 and get $201, so he earned $201 selling his nieces.

step-by-step explanation:

given that there are two triangles j'k'l' and jkl>

the former is got by dilating the second one.

when drawn on a grid, (graph paper) coordinates of vertices of first triangle is

(6,12)j, (9,6)k and (12,9)l

side jk has length = distance between j and k

=

side j'k'=distance between j' and k'

=

ie j'k'l' has sides 1/3 of that of corresponding sides of jkl.

hence scale factor of 1/3 is used to get j'k'l'from jkl