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Reil [10]
3 years ago
12

I need these numbers in scientific notation, please! Thank you!

Mathematics
1 answer:
Shkiper50 [21]3 years ago
4 0

\text{The scientific notation:}\\\\a\cdot10^k\ \text{where}\ 1\leq a

18.4\ m=1.84\cdot10\ m\\\\0.000000000172\ g=0\underbrace{.0000000001}_{10\to}72=1.72\cdot10^{-10}\ g\\\\4292000\ s=4\underbrace{292000}_{\leftarrow6}\ s=4.292\cdot10^6\ s\\\\8.3\ \cdot10^{-4}\ m\\\\1.496\cdot10^8\ m\\\\23.1\cdot10^{-3}\ kg=2.31\cdot10\cdot10^{-3}\ kg=2.31\cdot10^{-2}\ kg

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Answer:

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Step-by-step explanation:

we have

-2x^{2} +y=-5 ----> equation A

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solve by substitution

substitute equation B in equation A

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solve for x

-5x^{2} +5=-5

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x^{2}=2

x=\pm\sqrt{2}

<em>Find the value of y</em>

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For x=-\sqrt{2} ----> y=-3(-\sqrt{2})^{2} +5=-1

therefore

The solutions are

(\sqrt{2},-1),(-\sqrt{2},-1)

(StartRoot 2 EndRoot, negative 1) and (negative StartRoot 2 EndRoot, negative 1)

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<h3>Answer: Choice A</h3>

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==================================================

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