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Nutka1998 [239]
3 years ago
9

TEA samples its test questions for the TAKS test every year by field testing the questions. they tell schools to test certain cl

asses at specific schools throughout the state. what kind of sampling are they using?
a-Simple Random
b-cluster sampling
c-stratified sampling
d-convenience sampling
e-systematic sampling
Mathematics
1 answer:
Elina [12.6K]3 years ago
7 0
I think it is E.??? I am almost positive.
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Which trigonometric function has a range that does not include 0.4?
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<h2>Hello!</h2>

The answer is: y=cscx

<h2>Why?</h2>

Domain and range of trigonometric functions are already calculated, so let's discard one by one in order to find the correct answer.

The range is where the function can exist in the vertical axis when we assign values to the variable.

First:

y=cosx: Incorrect, it does include 0.4 since the cosine range goes from -1 to 1 (-1 ≤ y ≤ 1)

Second:

y=cotx: Incorrect, it also does include 0.4 since the cotangent range goes from is all the real numbers.

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y=cscx: Correct, the cosecant function is all the real numbers without the numbers included between -1 and 1 (y≤-1 or y≥1).

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y=sinx : Incorrect, the sine function range is equal to the cosine function range (-1 ≤ y ≤ 1).

I attached a pic of the csc function graphic where you can verify the answer!

Have a nice day!

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Answer:

i think that it is d

Step-by-step explanation:

not sure tho

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