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3 years ago

Need help on this I don’t understand.

Mathematics

1 answer:

marshall27 [118]3 years ago

7 0

Answer:

(9.2 , 0)

Step-by-step explanation:

vertex: (4.6 , 12.2)

parabola: y = a (x-4.6)² + 12.2

pass (0,0): 0 = a (0-4.6)² + 12.2

a = - (12.2/21.16)

2nd root (x , 0): y=0

0 = a (x-4.6)² + 12.2 (x-4.6)² = - 12.2 / a = -12.2 / (- (12.2/21.16)) = 21.16

x - 4.6 = ± √21.16 = ± 4.6

x = 0 or x = 9.2

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larisa86 [58]

Answer:

y = 5.064 - 0.010x

Here, in this question x = 33

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In this question data is missing and I filled it out and calculated the questions accordingly. Please refer to the attachment for the data calculated.

Step-by-step explanation:

First of all, this question is incomplete. It lacks the data needed to calculate the required things.

So, I figured out the question and I will try my best to solve the question at hand.

I have calculated the some data sheet in excel. Please refer to the attachment for that data.

let a be the salaries

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$S_{aa}$ = ∑ $a^{2}$ - $\frac{ Summtion a^{2} }{n}$

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$S_{bb}$ = 47.1943

$S_{ab}$ = ∑ $ab^{}$ - $\frac{ Summtion a x Summation b^{} }{n}$

$S_{ab}$ = -76.8286

Now the slope of the required regression equation is:

Slope = $S_{ab}$ / $S_{aa}$ = -76.8286/7522.8571 = -0.010

And the intercept of the required regression equation:

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so the relation is P = 10,000 / V

when V = 200 , 200P = 10,000

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