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

5 percent of 88 is the same as 60 percent of what number?

number 3 i need help please help me :( :)

Mes Courses de samedi Chaque samedi je fais des courses dans mon quartier. J'achète des choses à manger, et des choses dont j'ai besoin. Par exemple, cette se

What were the main reasons why there was fighting between the Europeans colonies in North America ?

Which is not a way that ancient people classified plants and animals?

When cell division becomes unregulated, and a cluster of cells begins to grow without regard for the normal controls, that is called?

true or false: for young people, it is more likely that they will drive too slow after drinking because of their natural risk-taling propensities.

PLEASE help!! :) What is the value of x? round to the nearest tenth. A circle with two chords is shown below. The diagram is not drawn to scale.

Decrease 28 by 7 and how do you do it someone answer please

In a second grade class containing 12 girls and 11 boys, 2 students are selected at random to give out the math papers. what is the probability that the second