3 years ago

If two numbers have different signs, their quotient is always

Mathematics

1 answer:

polet [3.4K]3 years ago

7 0

E. none of the above because there the opposite because one is division and the other is multiplication hope it helps

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Multiply (6x-6)(x+6)

Blizzard [7]

FOIL method : F = First , O = Outer , I = Inner, L = Last

(6x-6)(x+6)

First: 6x * x = 6x^2

Outer: 6x * 6 = 36x

Inner: -6 * x = -6x

Last: -6 *6 = -36

Put these in order and we get : 6x^2 + 36x -6x -36

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3 years ago

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The? half-life of a radioactive substance is 20 years. If you start with some amount of this? substance, what fraction will rema

yarga [219]

$\bf \textit{Amount for Exponential Decay using Half-Life} \\\\ A=P\left( \frac{1}{2} \right)^{\frac{t}{h}}\qquad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{initial amount}\\ t=\textit{elapsed time}\dotfill &120\\ h=\textit{half-life}\dotfill &20 \end{cases} \\\\\\ A=P\left( \frac{1}{2} \right)^{\frac{120}{20}}\implies A=P\left( \frac{1}{2} \right)^6\implies A=P\left( \cfrac{1^6}{2^6} \right)\implies A=\cfrac{1}{64}P$