Find the perimeter and area of each rectangle. 5 in
11 in
6 yd
12 yd
72
3
4.
5 yd
6 in
21 yd
16 in
5.
6.
4 yd
18 yd
91
15 ft
7
8.
5 ft
9 ft
13 in
20 in

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?

Find the unit rate for: 75% high-fiber chimp food to 25% high -protein chimp food.

Amass weighing 16 pounds stretches a spring 8/3 feet. the mass is initially released from rest from a point 2 feet below the equilibrium position, and the subsequent motion takes place in a medium that offers a damping force that is numerically equal to 1/2 the instantaneous velocity. find the equation of motion if the mass is driven by an external force equal to f(t)=cos(2t).