Rosa has $300. Suppose she spends 1/4 of the money on art supplies and 2/5 of the remainder on a pair of boots. Which stamens are correct for this situation? A) The boots cost $90
B) The boots cost $45
C) Rosa spends $75 on art supplies
D) Rosa has $135 left after making both purchases
E) Rosa has $165 left after making both purchases. {please help ASAP if possible!}

1. there are 25 students who started computer programming in elementary school and 25 students who started computer programming in middle school. the first group had a mean final project grade of 95% and the second group had a mean final project grade of 92%. the line plot shows the differences after 10 rerandomizations. determine whether the difference in the means of the two groups is significant based on the line plot. explain your answer.

Given the following sampling distribution of one mean with a sample size 49, from a normally distributed population,find the population standard deviation, o.79828588912497

If sr is 4.5cm and tr is 3cm, what is the measure in degrees of angle s?