The diagram below shows a square inside a regular octagon. The apothem of
the octagon is 15.69 units. To the nearest square unit, what is the area of the
shaded region?
13
Apothem length: 15.69
N
A. 1463 square units
B. 647 square units
O c. 764 square units
D. 816 square units
HELP HELP PLZ

Find the quotient. 50a2 – 98b2 -5a +7b

What is the rate of change of a line that passes through (2,-5) and (6,-2)?

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?