E. canis infection is a tick-borne disease of dogs that can also be contracted by humans. among infected humans, the distribution of white blood cell counts has an unknown mean and standard de- 3 that persons infected with e. canis must on average have lower white blood cell counts. for a sample of 30 infected persons, the mean white blood cell count is 4767 /mm3 and the standard deviation is 3 viation. in the general population, the mean white blood cell count is 7250 cells/mm . it is believed s = 3204 /mm . conduct a hypothesis test at the 1% level.

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!

+25 = x

step-by-step explanation:

here x is the hypotenuse of a right triangle whose legs are 7 and 24.   by the pythagorean theorem, 7² + 24² must equal x²:

x² = 49 + 576 = 625.   thus, x = +√625 = +25 = x

an altitude of 15,000 feet

step-by-step explanation: