3 years ago

How do I solve 3a=57

Mathematics

2 answers:

Kazeer [188]3 years ago

7 0

You have to do the reverse operation to 57 so you have to do 57÷3 which is 19

MatroZZZ [7]3 years ago

6 0

Divide 3 from both sides to get a=57/3 then a=19

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Read 2 more answers

What is the inverse of this function? f(x)=-1/2 square root of x+3, x > -3

yuradex [85]

The inverse function of $f(x) = -\frac 12\sqrt{x + 3}$ is $f^{-1}(x) = 4x^2- 3$

<h3>How to determine the inverse function?</h3>

The function is given as:

$f(x) = -\frac 12\sqrt{x + 3}$

Rewrite as;

$y = -\frac 12\sqrt{x + 3}$

Swap the positions of x and y

$x = -\frac 12\sqrt{y + 3}$

Multiply through by -2

$-2x = \sqrt{y + 3}$

Square both sides

4x^2 = y + 3

Subtract 3 from both sides

y = 4x^2 - 3

Express as an inverse function

$f^{-1}(x) = 4x^2- 3$

Hence, the inverse function of $f(x) = -\frac 12\sqrt{x + 3}$ is $f^{-1}(x) = 4x^2- 3$

Read more about inverse function at:

brainly.com/question/2541698

#SPJ1

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