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natima [27]
2 years ago
8

How much tip should you leave if you want to tip 25% at PF Chang on a $37.99 bill ??​

Mathematics
1 answer:
Naddik [55]2 years ago
3 0

Answer:

Step-by-step explanation:

37.99 * 25%= 9.497 or $9.50 tip

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A coin is tossed four times What is the probability of getting four heads? (1 mark) a) b) What is the probability of getting exa
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<h2>Answer:</h2>

1. A coin is tossed four times. What is the probability of getting four heads?

Each toss has a 1/2 chance of getting a head.

So the chance of getting all four heads can be calculated as :

1/2\times1/2\times1/2\times1/2=1/16

2. A coin is tossed four times. What is the probability of getting two heads?

Each toss can have 2 results, so 4 flips will have 2^{4} or 16 results.

Getting two heads means getting two tails also. So, we can get the number of times two heads come = \frac{4!}{2!2!} = 6

We can write the groups like - {HHTT,HTHT,HTTH,THHT,THTH,TTHH}

So, the required probability is : 6/16 or 3/8.

3. Not getting two heads means getting 3 tails and 1 head or all tails.

Probability of having all tails = 1/2\times1/2\times1/2\times1/2=1/16

Probability of one head(1st trial) and three tails = 1/16

Probability of one head (2nd trial) and three tails (the 1st, 3rd and 4th trials) = 1/16

Probability of one head (3rd trial) and three tails (the 1st, 2nd and 4th trials) = 1/16

Probability of one head (4th trial) and three tails (the 1st, 2nd and 3rd trials) = 1/16

So, the total probability showing only one or none head and at least three tails = 1/16+1/16+1/16+1/16+1/16=5/16

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3 years ago
Find the value of X <br> ASAP
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Which of these is a common characteristic of cnidarians?
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Hello there,

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A = P*e^(rt)

Here,

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