22. In a survey of 26 instructors, it was found that 11 liked whiteboards, 18 like blackboards, and 8 liked both. How many instructors like whiteboards only? How many instructors liked blackboards only? How many instructors liked neither?

a) 3

b) 10

c) 5                                

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 26

Instructor that like whiteboards = 11

Instructor that like blackboards = 18

Instructor that like both boards = 8

We have to find the following:

a)  instructors like whiteboards only

b)  instructors liked blackboards only

c)  instructors liked neither

tickets for the harlem globetrotters

show at michigan state university in

2010 cost $16, $23, or, for vip seats, $40.

total revenue = 16x + 23y + 40z

if 9 times as many $16 tickets were sold

as vip tickets,

x = 9z => x – 9z = 0, if 9 times as many $16 tickets were sold

as vip tickets,

x = 9z => x – 9z = 0, sales of all three kinds of tickets would

total $46,575.

16x + 23y + 40z = 46575, how many of each kind of ticket would

have been sold?

solve for x, y and z

x − 9z = 0

x − y − z = 55

16x + 23y + 40z = 46575

x = 1170

y = 985

z = 130

welcome!

900 degrees

step-by-step explanation: