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3 years ago

When you have a graph how do you know if it's a function?

Mathematics

2 answers:

butalik [34]3 years ago

3 0

Answer:

The vertical line test

Step-by-step explanation:

If the line as more than one y intercept, it's not a function

Snezhnost [94]3 years ago

3 0

Answer:B

Step-by-step explanation:

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yKpoI14uk [10]

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$= (-5)^3p^{4 \times 3}z^{6 \times 3} u^3$

$= -125p^{12}z^{18} u^3$

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$\text {Answer = } -125p^{12}z^{18} u^3 \text { (Answer C) }$
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3 years ago

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3 years ago

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A. For exercises 1 and 2, a set of data has a normal distribution with a mean of 120 and a standard deviation of 10.

Molodets [167]

A1.) the interval about the mean within which 90% of the data lie = 120 + or - 1.645(10) = 120 + or - 16.45 = 120 - 16.45 to 120 + 16.45 = 103.55 to 136.45

2.) P(100 < X < 140) = P(X < 140) - P(X < 100) = P(z < (140 - 120)/10) - P(z < (100 - 120)/10) = P(z < 2) - P(z < -2) = P(z < 2) - [1 - P(z < 2)] = 2P(z < 2) - 1 = 2(0.97725) - 1 = 1.9545 - 1 = 0.9545 = 95.5%

B1.) the interval about the sample mean that has a 1% level of confidence is 500 + or - 2.575(80/√1000) = 500 + or - 7 = 500 - 7 to 500 + 7 = 493 to 507

2.) 2P(z < a) - 1 = 0.90
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The interval about the sample mean such that the probability is 0.90 that the mean number lies within the interval is 496 - 504.

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3 years ago