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olya-2409 [2.1K]
3 years ago
14

What’s the interval domain of y=3

Mathematics
2 answers:
VLD [36.1K]3 years ago
7 0

I’m just doing this too

LekaFEV [45]3 years ago
4 0

Answer:

Domain:  

(

−

∞

,

0

)

∪

(

0

,

+

∞

)

 

Range:  

(

−

∞

,

+

∞

)

Step-by-step explanation:

y

=

3

x

y

is defined  

∀

x

∈

R

:

x

≠

0

Hence the domain of  

y

is  

(

−

∞

,

0

)

∪

(

0

,

+

∞

)

Now consider:

lim

x->0-

 

y

=

−

∞

and

lim

x->0+

 

y

=

+

∞

Hence the range of  

y

is  

(

−

∞

,

+

∞

)

This can be seen from the graph of  

y

below.

graph{3/x [-10, 10, -5, 5]}

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Answer:

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Step-by-step explanation:

Z-score:

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Idonna scored 671 on the mathematics part of the SAT. The distribution of SAT math scores in that year was Normal with mean 509 and standard deviation 115.

This means that her standardized score is Z when X = 671, \mu = 509, \sigma = 115. So

Z = \frac{X - \mu}{\sigma}

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9514 1404 393

Answer:

  • a = 17
  • ∠ABC = 78°

Step-by-step explanation:

The marked angles form a linear pair, so have a sum of 180°.

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__

Then the measure of angle ABC is ...

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