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Mashutka [201]
3 years ago
10

1. If you flip a fair coin 5 times, what is the probability of:

Mathematics
1 answer:
mash [69]3 years ago
3 0

Step-by-step explanation:

P(heads) = ½, and P(tails) = ½

a) P(5 heads) = (½)⁵ = ¹/₃₂

b) P(5 tails) = (½)⁵ = ¹/₃₂

c) P(at least 1 head) = 1 − P(all tails) = ³¹/₃₂

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You triple your account balance by making a deposit. Then you withdraw $28.50 from your bank account. Now your account is overdr
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Answer:

Your original account balance before you made the deposit is $6

Step-by-step explanation:

Let x = your original account balance.

You triple your account balance by making a deposit. This means

New account balance = 3 × x = 3x

Then you withdraw $28.50 from your bank account. This means that you have $(3x - 28.5) left.

Now your account is overdrawn by $10.50. This means you have withdrawn beyond what you have in your account. Your new account balance is -$10.5. Therefore,

3x - 28.5 = - 10.5

3x = -10.5 + 28.5 = 18

x = 18/3 = 6

Your original account balance before you made the deposit is $6

8 0
2 years ago
Emma has $89 in her bank account. she uses 30% of her money to pay a bill. How much did she spend?
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7 0
3 years ago
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almond37 [142]

Answer:

10x² - 12

Step-by-step explanation:

4x² - 7 + 6x² - 5 (combine like terms)

10x² - 12

3 0
3 years ago
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8 0
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