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victus00 [196]
3 years ago
10

Mark retired from competitive athletics last year. in his career as a sprinter he had competed in the 100-meters event a total o

f 328 times. his average time for these 328 races was
Mathematics
1 answer:
Leni [432]3 years ago
4 0
Missing part of the question: ... 10.25 seconds.

Question: Parameter of statistics?

Explanation:
Parameters summarizes data for the whole population while statistics summarizes sample data. In other words, statistics is a sub-set of parameters. In the mentioned case of mark, the data provided summarizes his entire sprinting career and thus is a case of parameters.
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fredd [130]

\dfrac{\partial\left(2xy^4+\frac1{x+y^2}\right)}{\partial y}=8xy^3-\dfrac{2y}{(x+y^2)^2}

\dfrac{\partial\left(4x^2y^3+\frac{2y}{x+y^2}\right)}{\partial x}=8xy^3-\dfrac{2y}{(x+y^2)^2}

so the ODE is indeed exact and there is a solution of the form F(x,y)=C. We have

\dfrac{\partial F}{\partial x}=2xy^4+\dfrac1{x+y^2}\implies F(x,y)=x^2y^4+\ln(x+y^2)+f(y)

\dfrac{\partial F}{\partial y}=4x^2y^3+\dfrac{2y}{x+y^2}=4x^2y^3+\dfrac{2y}{x+y^2}+f'(y)

f'(y)=0\implies f(y)=C

\implies F(x,y)=x^2y^3+\ln(x+y^2)=C

With y(1)=2, we have

8+\ln9=C

so

\boxed{x^2y^3+\ln(x+y^2)=8+\ln9}

8 0
3 years ago
Hi please help me with this asap.​
nataly862011 [7]

Answer:

Step-by-step explanation:

Top question

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Question two

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5 0
3 years ago
Oliver earns $9 per hour. Write and solve equation to find how many hours he mustwork to earn in your equation. $315. to define
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H=hours

9h= 315

H= 315/9

H= 35

Oliver must work 35 hours to earn $315.

Hopefully, this helps!
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4 years ago
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tiny-mole [99]

Answer:

the answer is 1188

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3 years ago
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Answer:

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