A professor knows that her statistics students' final exam scores have a mean of 75 and a standard deviation of 11.2. In his class, an "A" is any exam score of 90 or higher. This quarter she has 24 students in her class. What is the probability that 4 students or more will score an "A" on the final exam? prob =

Asegment in the complex plane has a midpoint at 7 – 2i. if the segment has an endpoint at 11 – 3i, what is the other endpoint?

What is the measure of the smallest angle in the diagram? 15 29 32 45

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?