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julsineya [31]
3 years ago
5

A triangle weighs 3 grams, and a circle weighs 6 grams. Use this applet to help find the weight of a square.

Mathematics
1 answer:
lesya [120]3 years ago
7 0

Answer: 3.75 g

Step-by-step explanation:

Assume the weight of the square is x.

The hanger is in balance so the left side is equal to the right side.

Equation therefore is:

Triangle + Square + 3 * circle = 5* square + circle

3 + x + (3 * 6) = 5x + 6

3 + x + 18 = 5x + 6

5x - x = 3 + 18 - 6

4x = 15

x = 15/4

x =  3.75 g

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You have a 100 coins laying flat on a table, each with a head side and a tail side. 10 of them are heads up, 90 are tails up. yo
dmitriy555 [2]
I LOVE THIS PUZZLE

so,
the solution is
take 10 coins off to the side
flip those 10 over
done

sounds too simple?
 

this can be solved with algebra for ANY number of coins
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we flip h coins head
if h=x+y
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solution:
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