Problem-solving / Reasoning At the end of a secretarial course, students were tested on . their typing speeds for
• number of words per minute typing their own text
• number of words per minute when typing words from an audio file.
This back to back stem and leaf diagram shows their results.
Audio Own text
QIf hint The
9 6 5 2 1 3 4 5 7
circled value is 52.
9 7 6 3 3 0 2 2 3 3 4 4 5 7 8 8 9
8 8 7 7 7 6 5 5 430 4 167
425
Key: 512 means 25 words per minute for audio
1211 means 21 words per minute for own text
a The course leader says, "Most of the audio scores are between 40 and 49.'
Write a sentence like this for the own text scores.
b Work out the median and range for:
i audio
li own text.

Astandard american eskimo dog has a mean weight of 30 pounds with a standard deviation of 2 pounds. assuming the weights of standard eskimo dogs are normally distributed, what range of weights would 99.7% of the dogs have? approximately 26–34 pounds approximately 24–36 pounds approximately 28–32 pounds approximately 29–31 pounds

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126 a. the attendance was never the same at both plays. b. the attendance was the same on day 5. the attendance was 231 at both plays on that day. c. the attendance was the same on day 13. the attendance was 295 at both plays on that day. d. the attendance was the same on days 5 and 13. the attendance at both plays on those days was 231 and 295 respectively.

Two line segments are shown in the figure below. suppose that the length of the line along the x-axis is 6, and the length of the hypotenuse of the triangle is 10. what is the equation of the hypotenuse line (shown in red, below)?