What is the relationship between two lines in the plane that intersect to form right angles? a. there is not enough information given to determine if the lines are perpendicular. b. there is not enough information given to determine if the lines are parallel. c. the lines are perpendicular. d. the lines are parallel.

Hillel is juggling flaming torches to raise money for charity. his initial appearance raises $500\$500 $500 , and he raises $15\$15 $15 for each minute of juggling performance. the amount rr r of money hillel raises is a function of tt t , the length of his performance in minutes. write the function's formula.

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 interior angles formed by the side of a hexagon have measures of them up to 720° what is the measure of angle a