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Kobotan [32]
3 years ago
9

It takes me 3 minutes to swim 2 laps. How long will it take me to swim 7 laps?

Mathematics
1 answer:
Rzqust [24]3 years ago
8 0

Answer:

4.66666666667

Step-by-step explanation:

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Answer:

x = 12

Step-by-step explanation:

The segment from the vertex to the base is a perpendicular bisector.

Using Pythagoras' identity on the right triangle on the right.

(\frac{1}{2} x )² + 3² = (\sqrt{45} )² , that is

\frac{1}{4} x² + 9 = 45 ( subtract 9 from both sides )

\frac{1}{4} x² = 36 ( multiply both sides by 4 )

x² = 144 ( take the square root of both sides )

x = \sqrt{144} = 12

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2 years ago
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