3 years ago

5. Which one choice is written in scientific notation.

Mathematics

1 answer:

murzikaleks [220]3 years ago

3 0

Answer: A is

Step-by-step explanation: its the only one that follows the rules

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HELP ME PLEASE!!!!

lys-0071 [83]

$64=4\cdot4\cdot4=4^3\\\\\left(\dfrac{1}{4}\right)^{c-2}=64\\\\\left(\dfrac{1}{4}\right)^{c-2}=4^3\\\\\left(\dfrac{1}{4}\right)^{c-2}=\left(\dfrac{1}{4}\right)^{-3}\iff c-2=-3\ \ \ |+2\\\\\boxed{c=-1}\\\\\text{check}\\\\L_s=\left(\dfrac{1}{4}\right)^{-1-2}=\left(\dfrac{1}{4}\right)^{-3}=4^3=64=R_s\\\\\text{correct :)}$
$\text{Used:}\\\\a^{-n}=\left(\dfrac{1}{a}\right)^n$

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