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2 years ago

the temperature changed from 5 degrees Celsius 6pm to -2 degrees Celsius at midnight. How much did the temperature decrease?

Mathematics

1 answer:

telo118 [61]2 years ago

5 0

7 degrees Celsius because to go from 5 to -2 you would subtract 7 so it’s 7.

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Write an equation for the line perpendicular to 4x - 12y = 2 and passing through point (10, -1)

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7^16/7^12=7^-18/? what is the missing denominator

creativ13 [48]

$\bf \left.\qquad \qquad \right.\textit{negative exponents}\\\\
a^{-{ n}} \implies \cfrac{1}{a^{ n}}
\qquad \qquad
\cfrac{1}{a^{ n}}\implies a^{-{ n}}
\qquad \qquad 
a^{{{ n}}}\implies \cfrac{1}{a^{-{{ n}}}}\\\\
-------------------------------\\\\$

$\bf \cfrac{7^{16}}{7^{12}}=\cfrac{7^{-18}}{x}\implies x\cdot 7^{16}=7^{12}\cdot 7^{-18}\implies x\cdot 7^{16}=7^{12-18}
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\\\\\\
\boxed{x=7^{-22}}\implies x=\cfrac{1}{7^{22}}$

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