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prohojiy [21]
2 years ago
5

7.7 cm

Mathematics
1 answer:
svp [43]2 years ago
6 0

Step-by-step explanation:

I guess the 3.14 is to be used for pi (and not r, which is what we need to find out).

the volume of a cylinder is ground area × height.

the ground area is the area of a circle, which is pi×r².

so, we have

pi×r²×height = 115 cm³

3.14×r²×7.7 = 115 cm³

3.14×r² = 14.93506494...

r² = 4.756390107...

r = 2.18091497... cm

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Say, for example, that a function  f  acts on 5, producing  f(5).  Then if g is the inverse of f, then g acting on f(5) will bring back 5.

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Actually, g must do that for all values in the domain of f.  And f must do that for all values in the domain of g.

In general, if a function f acts on a value of x, producing f(x),

then if g is the inverse, then g acting on f(x) -- g(f(x)) --will return x.

Here is the definition:

Functions <span>f(x)</span> and <span>g(x)</span> are inverses of one another if:

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6 0
3 years ago
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miss Akunina [59]

Answer:

The right answer is Option B:

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Answer:

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Answer:

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