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Karo-lina-s [1.5K]
3 years ago
15

Please help!! I'm desprate

Mathematics
1 answer:
Orlov [11]3 years ago
5 0

Answer:

Step-by-step explanation:

Going clockwise rotates the quadrilateral to the right.

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What’s the sum of the number k and the number before it and the number after it?
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Answer:

n+k=k+n=

n= k+n

n=k+n

Is that what your looking for? if it wrong I'm very sorry, and hav a great weekend

4 0
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HELP CONGRUENCE BY SAS AND SSS WILL GIVE BRAINLIEST IF CORRECT
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Step-by-step explanation:

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strojnjashka [21]

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Step-by-step explanation:

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3 years ago
A survey among students at a certain university revealed that the number of hours spent studying the week before final exams was
Rainbow [258]

Answer:

P(25

And we can find this probability with this difference:

P(0

And in order to find these probabilities we can use tables for the normal standard distribution, excel or a calculator.  

P(0

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem'

Let X the random variable that represent the hous spent studying the week before final exams of a population, and for this case we know the distribution for X is given by:

X \sim N(25,6)  

Where \mu=25 and \sigma=6

We are interested on this probability

P(25

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(25

And we can find this probability with this difference:

P(0

And in order to find these probabilities we can use tables for the normal standard distribution, excel or a calculator.  

P(0

6 0
3 years ago
prove algebraically that the straight line with equation x = 2y + 5 is a tangent to the circle with equation x^2 + y^2 = 5, i ha
Brums [2.3K]

Answer:

I dont even know

Step-by-step explanation:

too complicated

8 0
3 years ago
Read 2 more answers
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