Given the sets: A = {1, 2, 3, 6, 7, 9} and B = {2, 4, 6, 7, 8}. Find (A*upside down U*B). O A. {1, 4, 8, 9}
OB. {1, 2, 2, 3, 4, 6, 6, 7, 7, 8, 9}
O C. {1, 2, 3, 4, 6, 7, 8, 9}
OD. {2, 6, 7}

Suppose a pendulum is l meters long. the time,t,in seconds that it tales to swing back and forth once is given by t=2.01

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?

What are the values of each variable in the diagram below?