madnessrelic7853 madnessrelic7853

01-07-2018
Mathematics

contestada

There are 5 chemistry, 6 physics, and 7 math teachers in a school. if 3 teachers are selected randomly, find the probability that at least one is a math teacher.

Respuesta :

itsai7376p74zuj itsai7376p74zuj

01-07-2018

77.2%

To find the probably and at least on you must find the probability of none and subtract from one.

The probability of none can be found like so:

(5+6 over 5+6+7)^3 = .228

1 - .228 = .772

Hope this helps!

Answer Link

Otras preguntas

What percent by mass of each chloroform molecule is composed of chlorine?

Which statement about the Sacco-Vanzetti trial of 1921 is true? A. Many people believed they were convicted solely because they were anarchists. B. The evidence

what patterns are there in prime numbers

Jim uses ribbon for bookmarks. Jim has 9 feet of ribbon. He uses 1/3 foot of ribbon to make each bookmark. What is the total number of ribbons Jim can make from

Which was a weakness of the Articles of Confederation? A. The central government had too much power over people's lives. B. The state governments lost most of t

6/11 y =_18/22 solve simplest form

18/48 as it's simplest form?

What was Vladimir, Grand Prince of Kiev, known for? A. After sending out men to investigate various religions, he chose Eastern Orthodox Christianity as the sta

who was the king that got executed in the 17th century

What percent by mass of each chloroform molecule is composed of chlorine?