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Kipish [7]
2 years ago
10

$30 before tax discount 20% tax 6.4% tip 15%

Mathematics
2 answers:
kvasek [131]2 years ago
8 0

Answer:

$29.14

Step-by-step explanation:

$30 before tax and discount

20% discount

100% - 20% = 80% = 0.8

0.8 * $30 = $24 after discount before tax and tip

tax: 6.4%

100% + 6.4% = 106.4% = 1.064

1.064 * $24 = $25.54

tip: 15% = 0.15

0.15 * $24 = $3.60

total = $25.54 + $3.60 = $29.14

jeyben [28]2 years ago
4 0

Answer: $30.44

Step-by-step explanation:

$30 20% of tht is 6

30-6=24

tax is 6.4% which is 1.94

24+1.94 which equals $25.94

tips is 15% 4.5 so we add that to $25.94

 so total is $30.44

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Answer:

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Step-by-step explanation:

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P(X>a+t| X>t)=P(X>a)

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On this case then P(X>8|X>t)=P(X>8+t|X>t)=P(X>8)

We can use the definition of the density function and find this probability:

P(X>8)=\int_{8}^{\infty} \frac{1}{8}e^{-\frac{1}{8}x}dx

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Answer:

Step-by-step explanation:

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