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notka56 [123]
3 years ago
7

What are the solutions of x^2+6x-6=10?

Mathematics
1 answer:
ozzi3 years ago
4 0
The answer is B and that is it
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A mouse climbs up a well of 86 meters. It advances 14 meters during the night, but during the day it retreats 2. The mouse will
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Step-by-step explanation:

we assume day and night are equally long.

and the mouse will start at night of day 1.

then, on day 2, it will first retreat 2 meters (during daylight) and then advance 14 meters (at night).

so, on every full day, the mouse will effectively advance 12 meters (-2 + 14 = 12).

with a starting value of 14 (the first night).

so, we are getting an arithmetic sequence

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86 = 14 + 12(n-1) = 14 + 12n - 12 = 2 + 12n

84 = 12n

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so, on the 7th day the mouse will reach the surface (if we truly count the first starting night day 1 - this is up to your teacher, but I would).

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