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Schach [20]
3 years ago
14

If theperimeter of the triangle ABC is 23, find the length of each side.

Mathematics
1 answer:
aalyn [17]3 years ago
6 0
You can't.
There isn't enough evidence/proof to prove the length of each side.<span />
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Given the geometric sequence where a1 = 3 and r = √2 find a9
Zigmanuir [339]

Answer:

a_9=48

Step-by-step explanation:

we are given

sequence is geometric

so, we can use nth term formula

a_n=a_1(r)^{n-1}

we have

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so, we can plug n=9

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8 0
2 years ago
Lisa is now six years older than Cheryl. In two years, Lisa will be twice as old as Cheryl. How old is Lisa now?
Elena-2011 [213]
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Define x :
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Let Cheryl be x years old.
Cheryl = x
Lisa = x + 6

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In two years time:
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Cheryl = x + 2
Lisa = x + 8

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Lisa will be twice as old as Cheryl :
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x + 8 = 2(x + 2)

--------------------------------------------------
Solve x :
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x + 8 = 2(x + 2)
x + 8 = 2x + 4
x = 4

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Find their age :
--------------------------------------------------
Cheryl = x = 4
Lisa = x + 6 = 4 + 6 = 10

--------------------------------------------------
Answer: Lisa is 10 years old now.
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Step-by-step explanation:

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