The questions are there you just have to click on the picture to see the problems.Please help Me!!!!!

Mathematics

1 answer:

Lelechka [254]2 years ago

3 0

I did click on the picture but I can't see the problems it is zoomed in.

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On a coordinate plane, the x-axis is labeled minutes and the y-axis is labeled Blocks. Line A goes through points (10, 4), (15,

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Answer:

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1 year ago

Choose the missing reason in the proof. A.) AAS B.) ASA C.) SSA D.) SAS

sleet_krkn [62]

Answer:

D.) SAS

Step-by-step explanation:

AB = AC

BD = CD

<B = <C

So 2 triangles are congruent by SAS

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3 years ago

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Which expression is equivalent to

miss Akunina [59]

D. 41x + 11y
You add the like terms so the 23 and 18 to equal 41

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2 years ago

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Show that if X is a geometric random variable with parameter p, then

Lubov Fominskaja [6]

Answer:

$\sum_{k=1}^{\infty} \frac{p(1-p)^{k-1}}{k}=-\frac{p ln p}{1-p}$

Step-by-step explanation:

The geometric distribution represents "the number of failures before you get a success in a series of Bernoulli trials. This discrete probability distribution is represented by the probability density function:"

$P(X=x)=(1-p)^{x-1} p$

Let X the random variable that measures the number os trials until the first success, we know that X follows this distribution:

$X\sim Geo (1-p)$

In order to find the expected value E(1/X) we need to find this sum:

$E(X)=\sum_{k=1}^{\infty} \frac{p(1-p)^{k-1}}{k}$

Lets consider the following series:

$\sum_{k=1}^{\infty} b^{k-1}$

And let's assume that this series is a power series with b a number between (0,1). If we apply integration of this series we have this:

$\int_{0}^b \sum_{k=1}^{\infty} r^{k-1}=\sum_{k=1}^{\infty} \int_{0}^b r^{k-1} dt=\sum_{k=1}^{\infty} \frac{b^k}{k}$ (a)

On the last step we assume that $0\leq r\leq b$ and $\sum_{k=1}^{\infty} r^{k-1}=\frac{1}{1-r}$ , then the integral on the left part of equation (a) would be 1. And we have: