A study of education followed a large group of fifth-grade children to see how many years of school that a randomly chosen fifth grader completes. Let X be the highest year of school that a randomly chosen fifth grader completes. (Students who go on to college are included in the outcome X = 12.) The study found the probability distribution of X:

Years 4 5 6 7 8 9 10 11 12
Prob. 0.010 0.007 0.007 0.013 0.032 0.068 0.070 0.041 0.752

a. What percent of fifth graders eventually finished twelfth grade?
b. Check that this is a legitimate probability distribution.
c. Find R(X >=26).
d. Find (PX>6).
e. What values of X make up the event "the student completed at least one year of high school? (High school begins with the ninth grade.) What is the probability Of this event?

Part one: measurements 1. measure your own height and arm span (from finger-tip to finger-tip) in inches. you will likely need some from a parent, guardian, or sibling to get accurate measurements. record your measurements on the "data record" document. use the "data record" to you complete part two of this project. name relationship to student x height in inches y arm span in inches archie dad 72 72 ginelle mom 65 66 sarah sister 64 65 meleah sister 66 3/4 67 rachel sister 53 1/2 53 emily auntie 66 1/2 66 hannah myself 66 1/2 69 part two: representation of data with plots 1. using graphing software of your choice, create a scatter plot of your data. predict the line of best fit, and sketch it on your graph. part three: the line of best fit include your scatter plot and the answers to the following questions in your word processing document 1. 1. which variable did you plot on the x-axis, and which variable did you plot on the y-axis? explain why you assigned the variables in that way. 2. write the equation of the line of best fit using the slope-intercept formula $y = mx + b$. show all your work, including the points used to determine the slope and how the equation was determined. 3. what does the slope of the line represent within the context of your graph? what does the y-intercept represent? 5. use the line of best fit to you to describe the data correlation.

The area of a rectangle is 54x^9y^8 square yards.if the length of the rectangle is 6x^3y^4 yards,which expression represents the width of the rectangle in yards

How do you write a paragraph proof to prove that the corresponding angles shown are congruent