Concept explainers
Plot each group of points.
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Elementary & Intermediate Algebra
- Sports The ordered pairs below give the winning times (in seconds) of the women’s 100-meter freestyle in the Olympics from 1984 through 2012. 1984,55.92 2000,53.83 1988,54.93 2004,53.84 1992,54.64 2008,53.12 1996,54.50 2012,53.00 (a) Sketch a scatter plot of the data. Let y represent the winning time (in seconds) and let t=84 represent 1984. (b) Sketch the line that you think best approximates the data and find an equation of the line. (c) Use the regression feature of a graphing utility to find the equation of the least squares regression line that fits the data. (d) Compare the linear model you found in part (b) with the linear model you found in part (c).arrow_forwardWhich symbols correctly expresses the order in which the points A, B and X lie on the given line, A-X-B or A-B-X?arrow_forwardThe diagramm shows number of students who have TV, DVD, and Radio in different combinations. How many students have TV or DVD? (Assume that c = 2 )arrow_forward
- A shopper buys cat food in bags of 3 lbs. Her cat eats 3/4 lb each week. How many weeks does one bag last? a.Draw a diagram to represent the situation.arrow_forwardGiven (2,11), (4,18), (10,28), what is the intercept? The data are given as (x,y).arrow_forwardMake a Box plot for each data interpreter answer. A. Data C: 21,31,26,28,30,28,45,32arrow_forward
- A set of data is given: 3, 7, 11, 11, 16. Jesse calculated a measure of center and got 9.6, which measure of center did he just calculate?arrow_forwardUse the circle graph to answer the question. A library classifies its DVDs into one of the categories shown. The library owns 1767 DVDs. Determine the number of horror DVDs. A circle graph titled D V D Categories consists of a circle divided into 7 regions with labels and sizes as a percentage of the circle as follows: Science Fiction, 9 percent; Foreign, 6 percent; Horror, 12 percent; Drama, 11 percent; Romance, 13 percent; Action, 18 percent; Comedy, 31 percent. DVD Categories Science Fiction 9%Foreign 6%Horror 12%Drama 11%Romance 13%Action 18%Comedy 31% The number of DVDs isarrow_forward12.) Using the following ordered pairs: A(-5,5), B(-4,-6), C(7,7), and D (2,-4), what is the image of A when reflected across the line y = 0? a. (5,5) b. (-5,-5) c. (-5,5) d. (5,-5)arrow_forward
- Make a Box plot for each data interpreter answer. A. Data a: 2,3,6,4,6,7,8,10arrow_forwardTwelve friends are to arrange themselves in a straight line for a group photo. How many ways can these twelve people arrange themselves? A. 5,040 B. 12 C. 95,040 D. 479,001,600arrow_forwardFindn(C×G) given that C={4, 5, 6, 7, 8} and G={b, c, d}. n(C×G)=arrow_forward
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