3 years ago

What is (3.9 times 10 to the power of 2) times (2.3 times 20 to the power of 6)

Mathematics

1 answer:

Lady bird [3.3K]3 years ago

5 0

(3.9*10^2)(2.3*20^6)
(3.9*100)(2.3*64000000)
(390)(147200000)
57408000000 <<< is your answer

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

Work Shown:

To find the inverse, we swap x and y, then solve for y.

$y = \frac{1}{4}x^3 - 2\\\\x = \frac{1}{4}y^3 - 2\\\\x+2 = \frac{1}{4}y^3\\\\4(x+2) = y^3\\\\4x+8 = y^3\\\\y^3 = 4x+8\\\\y = \sqrt[3]{4x+8}\\\\$

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Side note:

If $f(x) = \frac{1}{4}x^3 - 2$ and $g(x) = \sqrt[3]{4x+8}$ , then $f(g(x)) = x$ and $g(f(x)) = x$ for all x values in the domain. Effectively, you use function composition to confirm that we have the correct inverse equation.

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