Santi buys 2 t-shirts for $9.50 each, a 3-pack of socks for $7.95, and a pair of shoes for $49.95. the sales tax is 6. to the nearest cent, what is the total cost of santi's purchases?

Find the value of the cosine for angle a

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?

Write the rational number in lowest terms 99/-15