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brilliants [131]
2 years ago
15

Can you make all the numbers from 1 to 20 using 4 fours?

Mathematics
2 answers:
Effectus [21]2 years ago
8 0

Answer: no you can't you can only use 5 numbers when going by 4's

Step-by-step explanation: 4, 8, 12, 16, 20

Kamila [148]2 years ago
3 0

Answer:

yes 4, 8, 12, 16, 20

Step-by-step explanation:

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Do more than 50 percent of the children in a certain group have brown hair?
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What we know is that 30% of the group have brown hair and are girls. It means that in the other 70% we have the boys with brown hair, the other boys and the other girls.

In the case all the girls have brown hair, the 70% remaining would be boys. So 70% of then would have brown hair. (0.7*0.7=0.49 -> 49% of the children would be brown hair) so 49% (boys) and 30% (girls) are more than 50%..

Now, let's suppouse that 90% of the group are girls. It means 10% are boys and 70% of that 10% (=7%) are the boys in the group that have brown hair. Now 7% + 30% of the children have brown hair, wich isn't more than the half.

We have explained with two extreme cases that the information is not enough for making a precise answer

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2 years ago
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Step-by-step explanation:

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3 years ago
Jack's football team scored 3 more field goals (x) than touchdowns (y) in
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Why is his name Jack? lol what about Aron or Liam...something hotter i mean he is a football player.

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