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Tatiana [17]
3 years ago
12

Suppose an experiment consists of randomly drawing a marble out of a bag and replacing the marble. the bag contains 3 yellow mar

bles, 4 red marbles, and 8 blue marbles. if the experiment were repeated 20 times, how many times would you predict the chosen marble would be yellow?
Mathematics
2 answers:
emmainna [20.7K]3 years ago
7 0
P=3/(3+4+8)=3/15=1/5
after 20 times it can be (1/5)*20=4 times
Savatey [412]3 years ago
4 0
Hi there!

Since the yellow marbles to the radio of total marbles is 3/15,

3/15 = 5

We need to divide the total amount is times the marble is drawn by the ratio.

20 ÷ 5 = 4

So, the yellow marble would be drawn 4 times.

Hope this helps!
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What’s the correct answer
tatyana61 [14]

21.3 is the correct answer.

7 0
3 years ago
Thirteen people on a softball team show up for a game. a)How many ways are there to choose 10 players to take the field? b)How m
marishachu [46]

Answer:

a) 286

b) 1,037,836,800

c) 285

Step-by-step explanation:

a) Since order is not important, the total possible number of ways to choose 10 players out of 13 is the following combination:

C(13,10)=\frac{13!}{(13-10)!10! } \\C(13,10)=\frac{13*12*11*10!}{(3*2*1)10! }\\C(13,10) = 286

b) The total number of possibilities to assign positions by the selecting 10 players is the permutation of 13 players for 10 positions:

P(13,10) = \frac{13!}{(13-10)!}\\P(13,10) = 13*12*11*10*9*8*7*6*5*4\\P(13,10) =1,037,836,800

c) The number of ways to pick 10 players including at least one woman is equal to the total number of ways to pick 10 players (found in item a) minus the the number of ways to pick 10 players without picking a single woman.

Since there 10 male players for 10 positions, there is only one possible way to pick a team without women, therefore:

P=286-1 =285

6 0
3 years ago
Y =9x+13 <br> y =2x+48<br> Can you find the x and the y
Digiron [165]
9x+13=2x+48
-2x      -2x
7x+13=48
    -13  -13
      7x=35
      /7     /7
      x=5

y=9(5)+13
y=45+13
y=58
4 0
2 years ago
Raheem bought 3 pounds of bananas about how many kilograms did he buy??
ehidna [41]
1 pound ≈  0.4536 kg.

3 pounds ≈  3 * 0.4536 ≈ 1.3608 kg

Hence 3 pounds ≈ 1.3608 kg.
6 0
3 years ago
Jeffrey's recipe for oatmeal muffins calls for 2 1/4 cups of oatmeal and makes one dozen muffins. If he makes 1 1/2 dozen muffin
Olegator [25]
1 1/8 cups of oatmeal b/c 2 1/4 ÷ 2 = 1 1/8 ( one and one eighth)
3 0
3 years ago
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