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liberstina [14]
3 years ago
15

Beth wants to buy a shirt that costs $40. She has a 20% discount. The sales tax is 8%.

Mathematics
2 answers:
iogann1982 [59]3 years ago
8 0
Correct answer:
$22.84

Explanation:
The tax is calculated by 0.075 * 21.25 = 1.59375 or $1.59. So the total bill is the cost of items purchased plus tax, which is $21.25 + $1.59 = $22.84.

This doesn't make sense I know but I tried ok
Aleks04 [339]3 years ago
6 0

Answer:

$34.56

Step-by-step explanation:

She will save 8 dollars from the discount.

The tax will be $0.56.

The final price of the shirt will be $34.56

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Answer:

a. X is a binomial random variable with n = 50 and p = 0.04

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Step-by-step explanation:

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

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And p is the probability of X happening.

X: the number of US residents (out of 50) with blood type AB.

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Z: the total number of individuals (out of 90) with blood type AB.

Here

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