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wlad13 [49]
3 years ago
15

How to solve -2(t-4)=10-2t

Mathematics
2 answers:
Natali5045456 [20]3 years ago
5 0

Answer:

0 = 2

No solution

Step-by-step explanation:

-2(t-4)=10-2t\\\\\mathrm{Expand\:}-2\left(t-4\right):\quad -2t+8\\\\-2t+8=10-2t\\\\\mathrm{Subtract\:}8\mathrm{\:from\:both\:sides}\\\\-2t+8-8=10-2t-8\\\\Simplify\\\\-2t=-2t+2\\\\\mathrm{Add\:}2t\mathrm{\:to\:both\:sides}\\\\-2t+2t=-2t+2+2t\\\\Simplify\\\\0=2\\\\\mathrm{The\:sides\:are\:not\:equal}\\\\\mathrm{No\:Solution}

koban [17]3 years ago
3 0
This is how to solve this problem :)

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Place these events on the probability
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Answer:

  • P(tails)=1/2
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Not sure of the rest but hope this helps

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A local animal rescue organization receives an average of 0.55 rescue calls per hour. Use the Poisson distribution to find the p
andreyandreev [35.5K]

Answer:

B) 0.894

Step-by-step explanation:

In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:

P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}

In which

x is the number of sucesses

e = 2.71828 is the Euler number

\mu is the mean in the given interval.

A local animal rescue organization receives an average of 0.55 rescue calls per hour.

This means that \mu = 0.55

Probability that during a randomly selected hour, the organization will receive fewer than two calls.

P(X < 2) = P(X = 0) + P(X = 1)

In which

P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}

P(X = 0) = \frac{e^{-0.55}*(0.55)^{0}}{(0)!} = 0.577

P(X = 1) = \frac{e^{-0.55}*(0.55)^{1}}{(1)!} = 0.317

P(X < 2) = P(X = 0) + P(X = 1) = 0.577 + 0.317 = 0.894

5 0
3 years ago
There are 40 people at Drake's sweet sixteen party. Drake's only rule is that everyone in the party must meet and shake each oth
nikdorinn [45]
1) This is a combination, so use ⁴⁰C₂.
     ⁴⁰C₂ = 780
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2) I got my solution by using the combinations formula. Or another way you              could do this is to add up... 39 + 38 + 37 + 36 + 35 + 34 + 33 + 32 + 31... +1.          You will end up with 780 (I did this to double check my work).

3) The quickest way to figure this out if Drake invited 1,000 people is to use the       natural numbers formula = n(n+ 1)/2.
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7 0
3 years ago
Read 2 more answers
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Advocard [28]

7,150,000

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The population of Virginia is 30% less than that.

So the population of Virginia is 10,500,000 - 30% which equals 7,150,000

3 0
3 years ago
Find the t-value such that the area in the right tail is 0.005 with 28 degrees of freedom.
klasskru [66]

Answer:

t = 3.673900

Step-by-step explanation:

Given

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Area = 0.005

Required

Determine the t-value

The given parameters can be illustrated as follows:

P(T > t) = \alpha

Where

\alpha = 0.005

So, we have:

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To solve further, we make use of the attached the student's t distribution table.

From the attached table,

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Hence, t = 3.673900

4 0
3 years ago
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