3 years ago

What is 0.3% written as a decimal?

Mathematics

2 answers:

r-ruslan [8.4K]3 years ago

6 0

Answer:

0.003%

Step-by-step explanation:

Juli2301 [7.4K]3 years ago

3 0

The answer is (0.0003). Hope this helps! :)

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There are 3 white counters and 1 black counter in a bag. what is the probability that I take out a black counter?

Oksanka [162]

Answer:

1/4

Step-by-step explanation:

Favorable events/total events

favorable: 1 black counter

total: 1+3=4

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3 years ago

Topic: Finite Geometric Sums <br> what is the value of ..

kobusy [5.1K]

$\bf \sum\limits_{i=a_1}^{a_n}\ a1\cdot (r)^{n-1}\iff S_n=a_1\left( \cfrac{1-r^n}{1-r} \right)\qquad 
\begin{cases}
a_1=\textit{first term}\\
r=\textit{common ratio}\\
n=n^{th}\ term
\end{cases}\\\\
-----------------------------\\\\

\begin{array}{llll}
\sum\limits_{i=1}^{3}\ &4\cdot \left( \frac{1}{2} \right)^{i-1}\\
&\uparrow \quad \uparrow \\
&a_1\quad r
\end{array}\iff S_3=4\left( \cfrac{1-\left( \frac{1}{2} \right)^3}{1-\left( \frac{1}{2} \right)} \right)$