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Volgvan
3 years ago
14

liam practiced piano 24 times in 4 weeks. his brother practiced piano 12 times in 14 days. are the rates equivalent?

Mathematics
2 answers:
kolezko [41]3 years ago
7 0
Yes because 24:4 is equal to 12:2
frosja888 [35]3 years ago
5 0

Answer:

No, because 24:4 is not equivalent to 12:14

Step-by-step explanation:

Lily's answer was wrong

The answer is simple because you can not divide 4 by 14 unless you want a decimal ratio.

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The percent increase in iron = 50 %

Step-by-step explanation:

Initial amount of iron per serving = 1.2 mg

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Percent increase in iron is calculated as

% increase = \frac{Final amont - initial amount }{initial amount}Change = \frac{Final \ amount - initial \ amount }{initial \ amount} (100)

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pishuonlain [190]

Answer:

a) 0.623 (62.3%)

b) 0.764 (76.4%)

c) 0.6 (60%)

Step-by-step explanation:

a) defining the event F= the product is favorable , then the probability is

P(F) = probability that the study was sponsored by food industry * probability that the product is favorable given that it was sponsored + probability that the study had no corporate ties * probability that the product is favorable given that it was not sponsored = 0.70 * 0.68 + 0.30 * 0.49 = 0.623

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P(U)= 0.70 * 0.10 + 0.30 * 0.35 = 0.175

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