3 years ago

Simplify the expression. Write the answer using scientific notation. (910^7)(710^9)

Mathematics

1 answer:

kirill115 [55]3 years ago

7 0

first one: 9 x 10^8th i thinkor just 90 million

second one: 7 billion. 7 x 10^9

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What is the inverse of the function f(x) =<br> 1/9x+ 2?

hichkok12 [17]

Answer:

$f^{-1}(x) = 9x -18.$

Step-by-step explanation:

$y=f(x)=\dfrac 19 x +2\\\\\text{Replace x with y and then solve for y,}\\\\~~~~~~~x = \dfrac 19 y+2\\\\\implies 9x =y + 18~~~~~~~~~~~~~~~;[\text{Multiply both sides by 9}]\\ \\\implies y = 9x -18\\\\\implies f^{-1}(x) = 9x -18\\\\\text{Hence, the inverse of the given function is}~ f^{-1}(x) = 9x -18.$