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olchik [2.2K]
3 years ago
9

Ordinary quarters and a fake quarter with two heads are placed in a hat. One-quarter is selected at random and tossed twice. If

the outcome is "HH," what is the probability that an
ordinary quarter was selected?
Mathematics
1 answer:
motikmotik3 years ago
4 0
How many quarters of each are there?
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nadezda [96]
The probability is C) 3/8.

The spinner landed on H 15 times out of (12+9+15+4) = 40 times.  This is a probability of 15/40, which simplifies to 3/8.
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17- 9=6<br> I really need help with this one
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Answer:

It's not right.

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I hope this helps you



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8 0
2 years ago
Help with number 10 pls it seems really easy!!
Alla [95]

OK so if they ring at 6AM together then they would ring like this from now on:

ANSWER: they ring together next at 9:20

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Bell 1: 6:50       Bell 2: 7:20

Bell 1: 7:15       Bell 2: 8:00

Bell 1: 7:40       Bell 2: 8:40

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Bell 1: 9:20       Bell 2: 11:20

4 0
3 years ago
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