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gavmur [86]
3 years ago
10

an experiment consists pf flipping a fair coin 4 times. what is the probability of obtaining at least one head?

Mathematics
1 answer:
yan [13]3 years ago
6 0
50%

There's always a fifty percent chance that it will land on heads or tails
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Gregg subtracted some number x from 47, then multiplied the result by two, subtracted 15 and got 45. What was Gregg's number?
irinina [24]
Work in reverse.

45 + 15= 60. 60/2= 30. 30 + x = 47.

So, x= 47-30.
x= 17.


6 0
2 years ago
im not sure wether to replace the minus signs with addition, so if you could help me that would be nice :) 1.2y+4.5-3.4y-6.3
Elenna [48]

Answer:

-2.2y - 1.8

Step-by-step explanation:

We are to simplify the expression:

1.2y + 4.5 - 3.4y - 6.3

Collect like terms:

1.2y - 3.4y + 4.5 - 6.3

Simplify:

-2.2y - 1.8

That is the answer.

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3 years ago
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Answer: 8

Step-by-step explanation:

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What’s the opposite of negative two
allsm [11]

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8 0
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