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Nitella [24]
3 years ago
14

1. Find the average of the prime numbers in the following list:5, 11, 13, 1, 16, 19, 21​

Mathematics
1 answer:
Tomtit [17]3 years ago
8 0

Answer:

12

Step-by-step explanation:

there are 4 prime numbers

5, 11, 13, 19

4/7 were prime

add 5, 11, 13 and 19 together and divide by 4

5+11+13+19

-----------------

4

add

48

----

4

divide top by bottom

=12

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VladimirAG [237]
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\\ \quad \\ \quad \\

%  radical denominator
\cfrac{1}{\sqrt[{ m}]{a^{ n}}}= \cfrac{1}{a^{\frac{{ n}}{{ m}}}}\implies a^{-\frac{{ n}}{{ m}}}\qquad thus\\
----------------------------\\

\\ \quad \\

\bf 
\\ \quad \\

\cfrac{1}{x^{-\frac{3}{6}}}\implies \cfrac{1}{x^{-\frac{1}{2}}}\implies \cfrac{1}{\frac{1}{x\frac{1}{2}}}\implies \cfrac{1}{1}\cdot \cfrac{x^{\frac{1}{2}}}{1}
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4 0
4 years ago
Which expression is equivalent to log 3(x+4)
larisa86 [58]

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6 0
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Step-by-step explanation:

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<em><u>I hope this helps!</u></em>
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