Question

Lydia is playing Galaxy 8RX. After three misses, the game is over. Last week, Lydia kept track of how long her games lasted. Hse msde a line plot of her data. Lydia said,"My best time is 2 3/4 minutes longer than my worst time because 4 1/4-1 1/2=2 3/4. Is subtraction the correct operation to compare Lydia's best and worst times?Explain. Are Lydia's calculations accurate?Show how you know. In the line plot, what do the numbers Lydia subtracted represent? Does Lydia's conclusion make sense? How did you decide? If not, what can you do to improve her reasoning? ​

Answer 1

Answer:

Yes ; Yes ; Yes it makes sense

Step-by-step explanation:

1.) Lydia used subtraction operator to define and establish a relationship between her best and worst game times ; Hence we could conclude that Lydia is correct as this gives the range between both times.

From the numbers given in the question as their is no graph attached :

4 1/4 - 1 1/2

17/4 - 3/2

(17 - 6) / 4

11 /4

= 2 3/4

The subtracted numbers represent the duration of each of the three times game was played ; Hence the numbers represents the game times.

Yes ; Her conclusion makes sense ; as she was able to deduce the range between her best and worst game time