Express 48% as a fraction

Mathematics

2 answers:

Leya [2.2K]3 years ago

5 0

Answer:

48/100

Step-by-step explanation:

all %are just out of 100

so its 48/100

soldier1979 [14.2K]3 years ago

3 0

Answer:

12/25

Step-by-step explanation:

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Step-by-step explanation:

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4 years ago

Which expression is equivalent to 60 Σ n=1 (2n − 1)2 ? Check all that apply.

Hunter-Best [27]

9514 1404 393

Answer:

B, D

Step-by-step explanation:

The quadratic expands to ...

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The coefficients can be factored out of the sum, so ...

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The sum of 60 ones is 60:

$\displaystyle\sum_{n=1}^{60}{1}=1+1+1+\dots+1=60$

So, the sum can be written as ...

$\displaystyle\sum_{n=1}^{60}{(2n-1)^2}\\\\=\boxed{4\sum_{n=1}^{60}{n^2}-4\sum_{n=1}^{60}{n}+\sum_{n=1}^{60}{1}}\\\\=\boxed{4\sum_{n=1}^{60}{n^2}-4\sum_{n=1}^{60}{n}+60}$