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2 years ago

Write a related subtraction fact for 9 + 3 = 12. Explain how the two facts are related.

2 answers:

7 0

So we know 3 x 3 = 9 right? Than 12 - 3 = 9 or 12 - 9 = 3!!! They both use the same numbers. Subtraction is the opposite of addition and allows us to check our answers.

Hope I Answered Your Question!!!

Westkost [7]2 years ago

3 0

12-9=3
12-3=9

You then can add any of the numbers to get 12, which is how they are related

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3 years ago

What is the cost of 12.6 gallons of gasoline if the price per gallon is $1.40?

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2 years ago

Read 2 more answers

PLEASE SOMEONE HELP I TRULY DO NOT UNDERSTAND

IceJOKER [234]

Hi there!

$\large\boxed{f^{-1}(x) = \sqrt[3]{\frac{x+4}{9} } }$

$f(x) = 9x^{3} - 4$

Find the inverse by replacing f(x) with y and swapping the x and y variables:

$x = 9y^{3} - 4$

Isolate y by adding 4 to both sides:

$x + 4 = 9y^{3}$

Divide both sides by 9:

$\frac{x+4}{9}= y^{3}$

Take the cube root of both sides:

$y = \sqrt[3]{\frac{x+4}{9} }\\\\f^{-1}(x) = \sqrt[3]{\frac{x+4}{9} }$

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3 years ago

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lina2011 [118]

I don’t understand. lol

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2 years ago