This histogram shows the numbers of people who volunteered for community service and the number of hours they worked.

how many volunteers worked no more than 10 hours?

a.30

b.35

c.55

d.

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.

Consider circle c with angle acb measuring 3/4 radians. if minor arc ab measures 9 inches, what is the length of the radius of circle c? if necessary, round your answer to the nearest inch.

Aright cylinder has a diameter of 8 m and a height of 6m. what is the volume of the cylinder