The sides of a square have lengths of a centimeters. draw the square. draw the rectangle obtained by extending two parallel sides of the square 6 centimeters. find expressions for the perimeter and area of each figure.

Ascuba diver was 80 feet below sea level and swam up at a rate of 4 feet per minute. the two solutions show how long it took the scuba diver to reach an elevation of 20 feet below sea level. lydia and max used the methods shown below to find the time it took the diver to reach the new elevation.

X+ y = k 2x + 3y = k + 1 the point of intersection of the lines has an x-coordinate of a.2k + 1 b.-2k + 1 c.2k - 1

1. what is the measure of ∠abc? what is the measure of ∠abd?