A bag contains 4 blue marbles, 5 green marbles and 3 yellow marbles. How many blue marbles should you add to the bag so that the
probability of drawing a marble is 0.80
1 answer:
Answer:
ADD 28 blue marbles. Added for total of 32/40= 0.80
Step-by-step explanation:
4/12 or 1/3 (33%) for original amount
X/X+8=.8
X=.8 x (X+8)
X=
<u>Sorry </u>I do not remember how to complete this equation so did it by substituting numbers until solution was .80
Need a total of 32/32+8 (40) =0.8 or 80% chance
So need to add
28 blue marbles.
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Answer:
ab - bc = 6
Step-by-step explanation:
COMPUTATION:
ab - bc = ?
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Answer:
<h2>
x=1</h2>
Step-by-step explanation:
|20x|=|4x+16|
or, 20x-4x=16
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