A dentist gives each patient a toothbrush after his or her visit. The toothbrushes come in 5 different colors, and they are chosen at random to give to the patients. The chart shows the number of each
color toothbrush given to the last 50 patients to visit the dentist's office. Fill in the table with the
probability of each event occurring.
Toothbrush Color
Number of patients
who received it
Observed Probability
Red
9
a.
Blue
7
b.
Green
15
C.
Yellow
11
d.
Orange
8
e.

Brent wants to know what is 5 x 1/2

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

Adecibel is a logarithmic unit that can be used to measure the intensity of a sound. the function y = 10logx gives the intensity of a sound in decibels, where x is the ratio of the intensity of the sound to a reference intensity. the reference intensity is generally set at the threshold of hearing. use the graphing utility to graph the decibel function. a whisper has a sound intensity of 30 decibels. use your graph to you complete the following statement. the sound intensity of a whisper is times the reference intensity.