Points

1.) kayla wants to find the distance, ab, across a river. she walks along the edge of the river 75 ft and marks point c. then she walks 100 ft further and marks point d. she turns 90° and walks until her final location and marks point e. point e, point a, and point c are collinear.

2.) can kayla conclude that ∆abc and ∆edc are similar? why or why not?

3.) suppose de= 175 ft. what can kayla conclude about ab? explain. don’t forget to label your answer.

Sal is tiling his entryway. the floor plan is drawn on a unit grid. each unit length represents 1 foot. tile costs $1.35 per square foot. how much will sal pay to tile his entryway? round your answer to the nearest cent.

An angle that measures between 90 and 180° is called a(,

Need now max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.