3 years ago

The price of a fan is $15. The price is 27% lower than last week.

Mathematics

1 answer:

liraira [26]3 years ago

7 0

Comes down to exactly 10.95

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2 years ago

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A line that includes the points ( - 4, - 3) and ( - 3,S) has a slope of 3. What is the value of s?

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2 years ago

How much more is needed to make $10.00 4 dollars, 12 dimes, and 10 pennies

amid [387]

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4 dollars

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2 years ago

The question is:

saul85 [17]

$f(x) = \sqrt{x+1} \\ y = \sqrt{x+1} \ or \ y^2 = x+1 \ or \ x = y^2 - 1 \\ Therefore, \ f^{-1}(x)=x^2 - 1$

$(fof^{-1})(a) = f(f^{-1}(a))=f(a^2-1) \\ =\sqrt{a^2-1+1}=\sqrt{a^2}=a \\ \\ (f^{-1}of)(a)=f^{-1}(f(a))=f^{-1}(\sqrt{a+1})= \\ (\sqrt{a+1})^2-1 = a+1-1 = a$

Therefore, $(fof^{-1})(a) = (f^{-1}of)(a) = a$

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2 years ago