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NemiM [27]
3 years ago
10

Which of the following represents a relation that is not a function?

Mathematics
1 answer:
Doss [256]3 years ago
7 0
A function is for every input, there is 1 output
aka
x never repeats with a different y

A. x doesn't repeat, it's a function

B. -8 repeats with 34 and 40, this is not a funciton (this is the answer0

C. x doesn't repeat, it's a function

D. x doesn't repeat, it's a function



answer is B
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Find the inverse of f(x)= 0.5x -1
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Answer:

Y=2x+2

Step-by-step explanation:

Y=0.5x-1

To find inverse, switch and y

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6 0
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In the △PQR, PQ = 39 in, PR = 17 in, and the altitude PN = 15 in. Find QR.
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Answer:

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Let's solve for what is easier first:

Since we know that 5-15-17 is a Pythagorean triplet, we can infer that NR is 5....like I said earlier, it is a right triangle, so this guess holds true.


Here comes the interesting part:

Now, we have one part of QR, which is QN.

The other part can be solved by using the Pythagorean theorem.

It is (39^2-15^2)^(1/2)..which gives you 36, the square root of 1296, which happens to be the difference between the squares of 15 and 39.

SO, QR = QN + NR

5+36 = 41

QR = 41.

Hope this helps!

3 0
3 years ago
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Step-by-step explanation:

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