Answer:
1 Choosing Appropriate Measures
The dot plot shows the average number of hours students in a class
sleep each night.
6 7 8 9 10
Time (hours)
Amount of Sleep
a. What are the most appropriate measures to describe the center
and the variation?
Most of the data values are on the right clustered around 9, and the
tail extends to the left. The distribution is skewed left.
So, the median and the interquartile range are the most
appropriate measures to describe the center and the variation.
b. Describe the center and the variation of the data set.
The median is 8.5 hours. The fi rst quartile is 7.5, and the third
quartile is 9. So, the interquartile range is 9 − 7.5 = 1.5 hours.
The data are centered around 8.5 hours. The middle half of the
data varies by no more than 1.5 hours.
Answer:
Charlotte's age = 10 years and Robert's age = 2(10) = 20 years
Step-by-step explanation:
Let Robert's age is r and Charlotte's age is c.
r = 2c
Five years ago,
Robert's age = (r-5)
His age was three times Charlotte's age. So,
(r-5) = 3(c-5)
Put r = 2c in the above equation. So,
(2c-5) = 3(c-5)
(2c-5) = 3c-15
Taking like terms together,
15-5 = 3c-2c
c = 10
So, Charlotte's age = 10 years
Robert's age = 2(10) = 20 years
Answer:
143 Minutes or 2 hours and 23 Minutes
Step-by-step explanation:
You have to find the rate at which she is typing and spell checking the pages
Ex//
26 minutes= 14 pages ----- simpllify to 13 Minutes= 7 pages
----you want to know how long it takes to do 77 pages---
77 can be found by multiplying 7 x11 so do the same with 23 (23x11)
** don't forget the unit!**
Answer:
Option A
Step-by-step explanation:
we know that
Solve for sin(A)
we have
substitute
32 rides in total.
He goes on 3/8 of all the rides.
x 3
--- = ---
32 8
8x = 32 * 3
8x = 96
/8 /8
x = 12
Norman goes on 12 of the rides.