Help i’ll give brainliest please hurry

Mathematics

1 answer:

Dvinal [7]3 years ago

6 0

Oceans crust inner outer mantle

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4) A piece of hematite contains 70%

miv72 [106K]

Answer:

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Step-by-step explanation:

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3 years ago

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masha68 [24]

$\dfrac{5}{7}\ of\ 100:\\\\\dfrac{5}{7}\cdot100=\dfrac{5\cdot100}{7}=\dfrac{500}{7}=\dfrac{70+28+2}{7}=\dfrac{70}{7}+\dfrac{28}{7}+\dfrac{2}{7}\\\\=10+4+\dfrac{2}{7}=14\dfrac{2}{7}\\\\\dfrac{2}{7}\ \text{is smaller than}\ \dfrac{1}{2}.\ \text{Therefore}\ 14\dfrac{2}{7}\approx14\\\\Answer:\ \boxed{14}$