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lisabon 2012 [21]
3 years ago
7

Raina bought 6 CDs that were each the same price. Including sales tax, she paid a total of $73.20. of that total, S7.80 was tax.

What was the price of each
before tax?
Mathematics
1 answer:
GarryVolchara [31]3 years ago
4 0

Answer:

$4.40

Step-by-step explanation: First you divide 73.20 by 6 to get 12.2. Thats how much each costs with tax. Then you have to take tax off so 12.2-7.80=4.4. So $4.40.

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B. 42-10

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Only one of the comparisons below is correct. Which is correct? What benchmark was used in your answer?
tiny-mole [99]

Answer:

2/3<9/10; I used 3/4 as a benchmark.

Step-by-step explanation:

2/3<1/2; I used 1/2 as a benchmark.

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So this is wrong, as 0.667 > 0.5.

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1/2 = 0.(10/2) = 0.5

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2/3<9/10; I used 3/4 as a benchmark.

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9/10 = 0.(90/10) = 0.9

So this is correct, as 0.667 < 0.9

3/4<2/3; I used 1/2 as a benchmark.

3/4 = 0.(30/4) = 0.75

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0.75 > 0.667, so this is wrong.

5 0
3 years ago
19) It will cost $12.50 per person to make dinner. Write an
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Answer:

0.2231 (22.31%)

Step-by-step explanation:

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P(F)= probability that the advertising campaign is cancelled before lunch * probability that marking department is fired given that the advertising campaign was cancelled before lunch + probability that the advertising campaign is launched but cancelled early  * probability that marking department is fired given that the advertising campaign is launched but cancelled early        ....   (for all the 4 posible scenarios where the marketing department is fired)

thus

P(F) =0.10 * 0.74 + 0.18 * 0.43 + 0.43 * 0.16 + 0.29*0.01 = 0.2231 (22.31%)

then the probability that the marketing department is fired is  0.2231 (22.31%)

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