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Viefleur [7K]
3 years ago
8

Which does not show a direct variation between x and y?PLZZZ HELP ASAP?

Mathematics
2 answers:
svetoff [14.1K]3 years ago
6 0
A direct variation equation takes the form y=kx, where k is a constant.

Choice A displays a direct variation since it takes the form y=kx, where k=5.

Choice B does NOT display direct variation because x is in the denominator. This relationship between x and y in choice B is called inverse variation.

Choice C displays direct variation since it takes the form y=kx, where k=0.7

Choice D displays direct variation since it takes the form y=kx, where k=1/9.

In conclusion, your answer is CHOICE B. Have an awesome day! :)
Anon25 [30]3 years ago
3 0
Y = 6/x does not show a direct variabtion

Answer
B. y = 6/x
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Step-by-step explanation: The margin of error formulae is given below as

Margin of error = critical value ×(σ/√n)

Where σ = standard deviation and n is the sample size.

From our question, margin of error = 0.08

Variance is 1.691,

hence σ = √variance = √1.691

= 1.3.

We will be using a z test for our critical value this is because a soft drink manufacturer will always produce drinks more than 30 in numbers.

The critical value for a 85% confidence interval is 1.44.

Hence critical value is 1.44.

By substituting the parameters, we have that

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0.08 = 1.873/ √n

By cross multiplying

0.08 × √n = 1.873

√n = 1.873/ 0.08

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n = 547.

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3 years ago
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