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kolezko [41]
3 years ago
14

Caroline walked 40 laps on an indoor track in 20 minutes. What was Caroline's average speed in laps per minute?

Mathematics
2 answers:
kakasveta [241]3 years ago
8 0

The answer would be 2 laps per minute


Explanation

====================================================================

We can set this problem up as \frac{40}{20}. We simply divide and we get 2 laps per minute.

<em>I hope this helps : )</em>


Lana71 [14]3 years ago
5 0
2 laps per minute 40/20=2
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According to geometric sequence first term 50000 and common ratio 1.05.

Applying geometric sequence formula

a_n = ar^{n-1}

1) a_n = 50000(1.05)^{n-1}

2) In order to find salary in 5 years we need to plug n=5, we get

a_5 = 50000(1.05)^{5-1}= 50000(1.05)^4

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S_n = \frac{a(1-r^n}{1-r}

Plugging n=10, a = 50000 and r= 1.05.

S_10 = \frac{50000(1-(1.05)^{10}}{1-1.05}

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= 628894.62678.

<h3>Therefore , you will have earned $ 628894.62678 in total salary by the end of your 10th year.</h3>



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