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

Examine Alexa’s skill in ordering drinks from Starbucks

Luis has some nickels, dimes, and quarters. The value of all of the coins, in cents, is represented with the expression shown. 5(2 + 2) + 10x + 25 (3x + 1) Whic

The type of government in Russia after World War II was:

Plz HELP!!!!BRAINLIEST FOR THE PERSON WHO ANSWERS FIRST!!!!! A person who receives the blood is referred as?

A wheel on John's bicycle is 1.1 m in diameter. John races the bicycle for 131 m. How many times does the wheel turn as the bicyde travels this distance? Use th

IT IS SCIENCE NOT SOCIAL STUDIES, IT DIDN'T HAVE SCIENCE. I JUST WANTED TO TELL SO YOU DON'T THINK IT IS SOCIAL STUDIES. Which time period is closer to the scie

Write the equation in standard form. Then identify the values of a, b, and c that you would use to solve the equation using the Quadratic Formula. *Hint: the va

If x=9 and y=−3, evaluate the following expression:4y+3x

Royal Corporation uses the indirect method of computing net cash flow from operating activities and reported the following for Year 2: Accounts receivable decre

Can someone help me is the answer a or b ??:(