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3 years ago

A rectangular deck is 9 meters long by 7 meters wide. What is the length someone would walk

Mathematics

1 answer:

Feliz [49]3 years ago

4 0

Answer:

11.4 metres

Step-by-step explanation:

Use Pythagoras theorem for a right-angled triangle

a^2 + b^2 = c^2

if you cut the rectangle in half, it will become a right angled triangle.

a and b are two sides of the rectangle, while c is the diagonal or hypothenuse

so 9^2 + 7^2 = c^2

81 + 49 = c^2

c^ 2 = 130

square root 130 = c

you should get approximately 11.4 metres

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ZanzabumX [31]

Answer:

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Step-by-step explanation:

(This exercise has been presented in Spanish and for that reason explanation will be held in the same language)

Sea $p_{o}$ el precio original del computador portatil, el nuevo precio es:

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2 years ago

If there is 520 grams of radioactive material with a half-life of 12 hours, how much of the radioactive material will be left af

AURORKA [14]

This is a fairly easy half-life problem
Each half-life reduces the radioactive material by one half.
So after 72 hours the radioactive material would have undergone 6 half-lives.
2^6 = 64.
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radioactive decay is an exponential decay function.

Source:
http://www.1728.org/halflife.htm

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