Square root of -72 in the form of a+bi

or just

Step-by-step explanation:

does not have a real part, it is a pure imaginary number.

Let's simplify.

First step:

is the imaginary unit.

So we have that we can write .

Second step:

Let's simplify the factor by looking for perfect squares of .

So is a perfect square because it can be written as .

We could write this as .

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!