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Korolek [52]
3 years ago
11

Alice can return to normal size if she flips at least 1 tail out of two flips of the coin. determine the probability as a percen

tage of her returning to normal size.
P(at least 1 tail)=___%
Mathematics
1 answer:
kolbaska11 [484]3 years ago
7 0

Answer:

75

Step-by-step explanation:

1 - P(no tails)

1 - (½)²

1 - ¼

¾ × 100 = 75%

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tamaranim1 [39]
<h3>Answer:</h3>

30 ft; 0.4 min

<h3>Step-by-step explanation:</h3>

The mnemonic SOH CAH TOA reminds you ...

... Sin = Opposite/Hypotenuse

Here, the angle of elevation is opposite the triangle side representing the distance between floors. The hypotenuse is the length of the conveyor belt. Rearranging the formula (by muliplying by Hypotenuse/Sin), we get ...

... Hypotenuse = Opposite/Sin

Filling in the values from this problem, we have ...

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The time it takes to travel that distance is given by ...

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... time = (30 ft)/(75 ft/min) = 2/5 min = 0.4 min

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3 years ago
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