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2 years ago

Find the probability distribution for the following function: P(x)=x/2+1 for x=4,6, and 8

Mathematics

1 answer:

son4ous [18]2 years ago

4 0

56 because i just took the test ps this is wrong i just need the points

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Which of the following is a rational number?

Anastaziya [24]

Answer:

none of them are rational

Step-by-step explanation:

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2 years ago

Write the following numbers in order from least to greatest: -5.6, 7.95, 2.06, 0, -6.89

pashok25 [27]

Answer:

-6.89, -5.6, 0, 2.06, 7.95

Step-by-step explanation:

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2 years ago

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What is the exact repetend of 2222/25 divided by 39

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Answer:2 272/975

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3 years ago

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How many terms are there in a geometric series if the first term is 4, the common ration is 3 and the sum of the series is 160

Marina CMI [18]

$\bf \qquad \qquad \textit{sum of a finite geometric sequence}
\\\\
S_n=\sum\limits_{i=1}^{n}\ a_1\cdot r^{i-1}\implies S_n=a_1\left( \cfrac{1-r^n}{1-r} \right)\quad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
r=\textit{common ratio}\\
----------\\
a_1=4\\
r=3\\
S_n=160
\end{cases}$

$\bf 160=4\left( \cfrac{1-3^n}{1-3} \right)\implies 160=4\left( \cfrac{1-3^n}{-2} \right)\implies 160=-2(1-3^n)
\\\\\\
160=2(3^n-1)\implies \cfrac{160}{2}=3^n-1\implies 80=3^n-1
\\\\\\
81=3^n~~
\begin{cases}
81=3\cdot 3\cdot 3\cdot 3\\
\qquad 3^4
\end{cases}\implies 3^4=3^n\implies 4=n$

3 0

2 years ago

Is X-1 a factor of x^5-1?

Musya8 [376]

Answer: No

Explanation:

According to factor theorem, if f(x)=0 then x is a factor of the given function or equation.

As x-1 is a factor

We equate x-1=0

x=1

Substituting in x^5-1, we have 1^5-1 =1-1=0.

Hence, it's a factor.

When coming to x^5+1, it would become 1^5+1=1+1=2

So x-1 isn't a factor of x^5+1.

4 0

1 year ago