1. marcia spent $0.76 for a cookie. ken spent $0.67 for candy bar. who spent more?
2. twenty of the 25 students in mrs. thigpen's class are wearing sneakers. what is this fraction in simplest form?
3. leslie downloaded two software programs into her computer. the first program took 5.76 minutes to download while the second took 5.06 minutes to download. which program took longer to download?

The triangles are similar. what is the value of x? show your work.

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?

Which of these tools or constructions is used to inscribe a hexagon inside a circle?