3 years ago

Judy is n years older than Carmen and twice as old as Frances. If Frances is 15, how old is Carmen?

2 answers:

8 0

J is n+c
j is 2f

j=n+c
j=2f

f=15
j=2(15)
j=30
30=n+c
30-n=c

carmen is 30-c years old

4 0

What does the "n" stand for?

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natita [175]

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The area of a circle is:

$a = \frac{1}{2} \pi {r}^{2}$

So, this "quarter circle" is:

$a = \frac{1}{4} \times \frac{1}{2} \pi {r}^{2}$

R is the radius (the diagram shows the radius is 8), so we can now find the area:

$a = \frac{1}{4} \times \frac{1}{2} \pi \times {8}^{2} \\ a = \frac{1}{8} \pi \times 64 \\ \\ a = \frac{64\pi}{8} \\ a = 8\pi$

The area is 8π.

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Len [333]

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natali 33 [55]

Then number is 3 because 3 times 5 is 15 and 15 plus 2 is 17. Hope this helps.

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