Question

FOR A MEDAL

Answer 1

Bag A contains 3 white marbles and 2 red marbles. Bag B contains 6 white marbles and 3 red marbles. A person draws one marble from each bag. Find the probability that both marbles are white.

Answer 2

I am thinking hat you would add the red to the red and the white to the white and then make a fraction out of your answers

Answer 3

ok can u help me with another question

Answer 4

2/3 * 3/5 = 6/15 = 2/5

Answer 5

A state makes auto license plates that have two letters (excluding I, 0, and Q) followed by four digits of which the first digit is not zero. How many different license plates are possible?
3,085,128
3,470,769
4,761,000

Answer 6

P(both marbles are white)=P(white from A and white from B)
=P(white from A)*P(white from B)=3/5×6/9=2/5

Answer 7

26 letters - 3 letters * 26 letters - 3 letters * 10 digits - 1 digit * 10 digits * 10 digits * 10 digits

= 23 * 23 * 9 * 10 * 10 * 10 = 4,761,000

Answer 8

take how many different letters the first letter could be, multiply it by the number of different letters the second could be, multiply it by the number of digits possible for the first slot, multiply it by the number of digits possible for the second slot, multiply it by the number of digits possible for the third slot, multiply it by the number of digits possible for the fourth slot, and there is your answer.

Answer 9

I have answered that question for somebody i think me and the person decided that the answer is B

Answer 10

mine was c and i masterd my test idk

Answer 11

Ok i tried to help

Answer 12

what about this one
An astronomer wishes to measure on a photograph the distance between the image of a certain star and three other star images nearby. If eight images are nearby, how many choices of the three stars does he have?

Answer 13

mmhhmm

Answer 14

it's a combination. Using the formula for combinations:
8 C 3 = 8! / (3!(8 - 3)!) = 8! / (3! * 5!) = (8 * 7 * 6 * 5!) / (3! * 5!) = (8 * 7 * 6) / (6) = 56

56 choices.

Hope this helps! :)

EDIT: I'd just like to address the question a little better. Order does not matter because the order in which he chooses the three stars doesn't make a difference when measuring them. In other words, if he picks three stars in a certain order and obtains a distance, the distance will be the same if he chooses the SAME three stars in a different order. I hope that clears it up a little.

Answer 15

I am going to have to think about that one

Answer 16

I have no idea I can't help you with this one

Answer 17

any more