How do you do this??

Mathematics

2 answers:

lisabon 2012 [21]2 years ago

8 0

Answer:

131.964 cm

Step-by-step explanation:

$C = 2 \pi r = 2 * 3.142 * 21 = 3.142 * 42 = 131.964 \ cm$

Alex777 [14]2 years ago

6 0

The formula for the circumference of a circle = 2 x radius x pi

The radius is given as 21 cm and pi = 3.142

Circumference = 2 x 21 x 3.142 = 131.964 cm

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What is the simplified form of the expression (6^-4)^-9/6^6?

aleksley [76]

Answer:

$(\frac{1}{1296} )^{\frac{729}{64} }$

Step-by-step explanation:

I am assuming this problem reads $(6^{-4}) ^{-\frac{9}{6}^6 }$

So let's start on the outside and work our way towards the middle
Starting with the $(-\frac{9}{6} )^{6}$ , this can be simplified to $\frac{729}{64}$

Now we have $(6^{-4})^\frac{729}{64}$

Now simplifying what is inside the parenthesis we get $\frac{1}{1296}$
Combining what we have the simplified for of the problem becomes: $(\frac{1}{1296} )^{\frac{729}{64} }$

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3 years ago

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Shkiper50 [21]

Answer: The second option.

Step-by-step explanation:

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