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lapo4ka [179]
2 years ago
14

Pls :,) i suck at math

Mathematics
2 answers:
vesna_86 [32]2 years ago
6 0

Answer:

60%

Step-by-step explanation:

The original was $20 to $12, so if you divide both prices by 2 (to make one side 10 and the other the simplified percentage) you get:

10 to 6.

Percentages are typically x% out of 100, so if you multiply both by 10 you get:

100 to 60. All you have to do now is change the format to percentage instead of a fraction (60/100) and the answer is 60%.

≧◡≦

Mocha here! If this answer helped you, please consider giving it brainliest because I would appreciate it greatly. Have a wonderful day!

Romashka-Z-Leto [24]2 years ago
4 0

Answer:

a i think

Step-by-step explanation:

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2 years ago
It is known that the population variance equals 484. With a .95 probability, the sample size that needs to be taken if the desir
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Answer:

We need a sample size of at least 75.

Step-by-step explanation:

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Now, we find the margin of error M as such

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\sqrt{n} = 8.624

(\sqrt{n})^{2} = (8.624)^{2}

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We need a sample size of at least 75.

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