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faltersainse [42]
2 years ago
6

A fast typist can type 120 words in 100 seconds. In 180 seconds, how many words could be typed?

Mathematics
1 answer:
Kitty [74]2 years ago
4 0
100 seconds --- 120 words 
180 seconds --- x words

x= \cfrac{180*120}{100}=18*12=216 \  \text{words}
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If f(x) = -(1/x^3) and x takes on successive values from -10 to 0.1 ,
prohojiy [21]
Alright, this one is a little interesting... Let's perform some tests to figure out what is happening:
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f(0) = -(1/0^3) = undefined!
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f(1) = -(1/1^3) = -(1/1) = -1 (negative, but bigger than last one)

It's a little confusing with the undefined part at x = 0. What I can say is this, it is increasing from -10 up to 0, something weird happens at 0 and it resets, and starts increasing from 0 up to 0.1. 

I guess A would be the best answer?

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