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Olenka [21]
3 years ago
6

A company claims its washing machine produces 4000 joules of work output for every 3000 joules of work input. What would make yo

u skeptical about this claim?
​
Mathematics
1 answer:
ycow [4]3 years ago
5 0

Things that make me skeptical: No evidence is provided, the company also claims that its washing machine produces 4000 joules of output for ever 3000 joules of input, and there is no possible way of creating a joule output larger than the input, unless your using coils to increase electricity, but that's not what washing machines have inside of their machinery. Washing machines don't have mini Tesla coils inside their machinery!

I hope this helps!

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Answer: B (104.50)

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3 years ago
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Answer:

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Does anyone know how to solve this? It’s really starting to stress me out.
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Answer:

π − 12

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If we substitute x = u + 2:

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Distribute the cube:

lim(u→0) (sin(πu + 2π) + 8 − (u³ + 6u² + 12u + 8)) / u

lim(u→0) (sin(πu + 2π) + 8 − u³ − 6u² − 12u − 8) / u

lim(u→0) (sin(πu + 2π) − u³ − 6u² − 12u) / u

Using angle sum formula:

lim(u→0) (sin(πu) cos(2π) + sin(2π) cos(πu) − u³ − 6u² − 12u) / u

lim(u→0) (sin(πu) − u³ − 6u² − 12u) / u

Divide:

lim(u→0) [ (sin(πu) / u) − u² − 6u − 12 ]

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Multiply and divide by π.

lim(u→0) (π sin(πu) / (πu)) − 12

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Use special identity, lim(x→0) ((sin x) / x ) = 1.

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