The area of a triangle definitely is base x height ➗2 what classic mistake has anne's made

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.

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 the following quartic functions has x = –1 and x = –2 as its only two real zeroes?