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Hitman42 [59]
3 years ago
5

P varies directly as q. When q = 31.2, p = 20.8. Find p when q = 15.3.

Mathematics
2 answers:
Len [333]3 years ago
8 0
The answer is 10.2 because you cross multiply Q over P.  <span />
taurus [48]3 years ago
8 0
15.3/31.2 = x/20.8
31.2x = 20.8*15.3
31.2x = 318.24
x=318.24/31.2
x=15.01
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Step-by-step explanation:

Formula to find the sample size :

n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2

Given : Confidence level : (1-\alpha)=0.90

⇒ significance level =\alpha= 0.10

z-value for 90% confidence interval (using z-table)=z_{\alpha/2}=1.645

Prior estimate of the population proportion (p) of customers who keep up with regular vehicle maintenance is unknown.

Let we take p= 0.5

Margin of error : E= 2%=0.02

Now, the required sample size will be :

n=0.5(1-0.5)(\dfrac{1.645}{0.02})^2

Simplify , we get

n=(0.25)(6765.0625)=1691.265625\approx1692

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ikadub [295]
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2 years ago
What is the equation of the graph <img src="https://tex.z-dn.net/?f=y%3Dx%5E3" id="TexFormula1" title="y=x^3" alt="y=x^3" align=
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Answer:

C. y = 2 (x + 3)³ − 4

Step-by-step explanation:

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2 years ago
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If we decide to work with the CGS system, the equation of motion would be

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If we decide to work with the MKS system, the equation of motion would be

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5 0
3 years ago
A Gardner is planting two types of trees
Nina [5.8K]

It will take 6 years for the trees to have same height.

Step-by-step explanation:

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Let,

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Type B;

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Dividing both sides by 6

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It will take 6 years for the trees to have same height.

Keywords: function, division

Learn more about division at:

  • brainly.com/question/3614284
  • brainly.com/question/3799248

#LearnwithBrainly

4 0
3 years ago
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