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3 years ago

1. 108 identical books have a mass of 30 kg. Find

Mathematics

1 answer:

AURORKA [14]3 years ago

8 0

Answer:

i) around 41.7 kg

ii) 72 books

Step-by-step explanation:

i) if 108 books are 30 kg then how much is the mass for 150? You cross multiply so 150 multiply by 30 and 108 multiply by x (the unknown mass). you will get 4500=108x and then 4500/108 is the unknown mass.

ii) use the same way as above.

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What are the solutions to the equation x2−12x+100=0?

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Answer:

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Step-by-step explanation:

$x^2-12x+100=0$

solve by quadratic formula.

$\frac{-b+-\sqrt{b^2-4(a*c)} }{2*a}$

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which is

$x=\frac{12+16i}{2}$

$x=\frac{12-16i}{2}$

Simplify.

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Solved.

Hope this helps.

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Answer:

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