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3 years ago

9

2. You are making necklaces for your friends. You have 72 blue beads and 42 red beads. Each friend will receive an identical nec

klace, and all beads must be used

1 answer:

hoa [83]3 years ago

4 0

To find out the number of necklaces that can be made from 72 and 42 beads, think of the Greatest Common Factor of both numbers

Factors of 72
1 × 72
2 × 36
3 × 24
4 × 18
6 × 12
8 × 9

Factors of 42
1 × 42
2 × 21
3 × 14
6 × 7

The Greatest Common Factor is 6, so there are 6 necklaces can be made with equal number of beads

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Step-by-step explanation:

1) 2 $\sqrt{12}$ + 3 $\sqrt{48}$ - $\sqrt{75}$

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= 5× $2\sqrt{3}$ - 3× $3\sqrt{2}$ + 4× $6\sqrt{2}$ + 2× $5\sqrt{3}$

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4) $(2\sqrt{2} + 3\sqrt{5} )^{2}$

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= $1 - 3$

= -2

6) $(2\sqrt{6} -1) (\sqrt{3} -\sqrt{2} )$

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Hope the working out is clear and will help you. :)

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Step-by-step explanation:

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