sophiakachouroff sophiakachouroff
  • 14-05-2022
  • Mathematics
contestada

the jar contains 22 marbles 12 purple 8 red and 2 green one marbles drawn and put back then a 2nd marble is drawn, what is the probability that both marbles were red?

Respuesta :

jimthompson5910 jimthompson5910
  • 14-05-2022

Answer:  16/121

Explanation:

There are 8 red marbles out of 22 total

8/22 = 4/11 is the probablity of randomly selecting red.

If the first marble is put back, then that probability will not change.

The probability of two red marbles in a row is (4/11)*(4/11) = 16/121

Side note: 16/121 = 0.1322 = 13.22% approximately

Answer Link

Otras preguntas

Evaluate the expression (11/7)(5/3)(3/1)
one-sixth of a number is 66
Explain why volcanoes are common in the Ring of Fire.
Carmen listed the multiples of 6 as 1,2,3, and 6. Is she correct? Explain why or why not.
Latex paint sells for $22 per gallon and will cost you $154 to paint your room. If each gallon will cover 340 square feet, how many square feet of wall space do
Carmen listed the multiples of 6 as 1,2,3, and 6. Is she correct? Explain why or why not.
twelve is sixteen less than four times a number
A rectangular room is four times as long as it is wide, and its perimeter is 70 meters. Find the width of the room.
Carmen listed the multiples of 6 as 1,2,3, and 6. Is she correct? Explain why or why not.
An author is having a book signing at a store. He agrees to give 5% of his profit to literacy programs and 15% of his profit to his manager. If he makes a profi