3 years ago

What is the GCF of 72 and 36

Mathematics

1 answer:

wlad13 [49]3 years ago

3 0

36 is the gcf of 72 and 36

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Please help

vovikov84 [41]

Answer: 13

Step-by-step explanation: Pythagorean theorem,

a²+b²=c²

5²+12²=c²

25+144=c²

Square root of 169 is 13

Hope this helps you!!!

5 0

3 years ago

Find the inverse of f informally. verify that f(f^-1(x))=x and f^-1(f(x))=x f(x)= (x-1)/5

Lera25 [3.4K]

Find inverse function.
$f(x)= \frac{x-1}{5} 
\\y= \frac{x-1}{5} 
\\x= \frac{y-1}{5} 
\\y-1=5x
\\y=5x+1
\\f^{-1}(x)=5x+1
\\
\\f(x)= \frac{x-1}{5} 
\\f^{-1}(x)=5x+1 \\ \\f(f^{-1}(x))=f(5x+1)= \frac{(5x+1)-1}{5} = \frac{5x}{5}= x \\ \\ f^{-1}(f(x))=f^{-1}(\frac{x-1}{5} )=5\frac{x-1}{5}+1=x-1+1=x$