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Viktor [21]
3 years ago
14

Explain how to calculate this mentally

Mathematics
2 answers:
LekaFEV [45]3 years ago
7 0

Answer:

1. 50℅

2. 25℅

3. 60℅

hope it helps.

djyliett [7]3 years ago
4 0

Answer:

Below.

Step-by-step explanation:

1. Divide 15 by 30 which is  1/2.

Then multiply 1/2 by 100 = 50%.

2.  3/12 = 1/4

1/4 * 100 = 25%

3.  6/10 = 0.6

0.6 * 100 = 60%.

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If the mass of your father is 70kg, what is his weight (N)?
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Answer:

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Step-by-step explanation:

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W= mg

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therefore weight W = 70×9.81 = 686.7 N

Hence the weight of the father will be 686.7 N

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4 years ago
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Step-by-step explanation:

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3 years ago
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