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A game consists of randomly choosing a bag(labelled 1, 2 or 3) out of a choice of 100, and then again randomly, picking a ball(red or black) from it. Each bag has the same number of balls in it (10)
Use the picture
C) The same player is going to play the game 200 times consecutively. How many black balls should be picked?

depends on how many days you are talking about

step-by-step explanation:

answer: hey there,

the answer you are looking for is a..

hope this you!

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

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13 - r - 1 + r

= 12 - r

c

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= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -