Use the quadratic formula to solve the equation. -x^2 + 5x = 3 a.) 5/2 ± √13/2 b.) -5/2 ± √13/2 c.) 2/5 ± √13/2 d.) -2/5 ± √13/2

Which of the following expressions are equivalent ?

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?

The sides of a parallelogram are 24cm and 16cm. the distance between the 24cm sides is 8 cm. find the distance between the 16cm sides