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Iteru [2.4K]
2 years ago
15

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
Mathematics
1 answer:
Nadusha1986 [10]2 years ago
4 0

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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5 0
3 years ago
What would this answer be if i solved for x?
Molodets [167]
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4 0
2 years ago
There are 86 people coming to my party and each person will need a cup how many packages of cups will i buy if one package of cu
marusya05 [52]

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5 0
3 years ago
Read 2 more answers
1). Solve for n n - 63 = 126 *
Zinaida [17]

Answer:

n=189

Step-by-step explanation:

n-63=126\\n=126+63\\n=189

I hope this helps! :)

Brainliest? ✨

4 0
2 years ago
Assume that a procedure yields a binomial distribution with n=3 trials and a probability of success of p=0.300. use a binomial p
NNADVOKAT [17]
\mathbb P(X=x)=\begin{cases}\dbinom3xp^x(1-p)^{3-x}&\text{for }0\le x\le3\\\\0&\text{otherwise}\end{cases}

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3 years ago
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