Ten years ago, only 20% of the u. s. population consisted of people more than 65 years old. a researcher plans to use a sample of n = 200 people to determine whether the population distribution has changed during the past ten years. if a chi-square test is used to evaluate the data, what is the expected frequency for the older-than-65 category?

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent and the median? 40 25 8 36 18 15 24 27 43 9 12 19 22 34 31 20 26 19 17 28

If sin(x) = 0 and cos(x) = 1, what is tan(x)?

Abdul is making a map of his neighborhood he knows the following information: his home, the middle school, and high school are all on the same street. his home, the elementry school, and his friends house are on the same street. the angle between the elementary school, middle school, and his home is congruent to the angle between his friends house, the high school, and his home. what theorem can abdul use to determine the two triangles are similar? a- side side side similarity theoremb- angle angle similarity theoremc- corresponding parts of similar triangles are congruentd- pieces of right triangles similarity theorem