3 years ago

An item has a listed price of $90. If the sales tax rate is 8%

1 answer:

3 0

Hello! To find the sales tax of an item, all you have to do is multiply the listed price by the tax rate. You pay $90 for an item with 8% tax rate. Let's solve it. 90 * 8% (0.08) is 7.2. There. The sales tax is $7.20.

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Step-by-step explanation:

Use the following property to ease the calculation:

P(At least one)=1-P(None)

Total number of electrical components: 9

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We have $^8C_4=70$ ways to to choose 4 good components from 8.

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P(At least one)= $1-\frac{^8C_4*^1C_0}{^9C_4}$

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P(At least one)=0.4444

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