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Ipatiy [6.2K]
2 years ago
13

What is the equation of the line? Plsss helppp

Mathematics
1 answer:
Goshia [24]2 years ago
5 0

Answer:

y = -7

Step-by-step explanation:

Slope: 0

y-intercept: (0,−7)

Since the line doesn't change up, down, right, or left, and it stays on the y-axis, that's how u get y = . The straight line runs along -7 . That's how u get -7 . so when u put it all together u get: y = -7 .

Hope that helps. Tried to explain the best I could :)

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Answer:

72.25663

Step-by-step explanation:

C=2πr=2·π·11.5≈72.25663

8 0
3 years ago
A regression of y = calcium content (g/L) on x = dissolved material (mg/cm2) was reported in the article "Use of Fly Ash or Sili
MatroZZZ [7]

Answer:

a) The slope = 0.144 , means that an increase in dissolved material by 1 mg/cm^2 will lead to an increase in Calcium content by 0.144 g/l

while the coefficient of determination = 0.869 , means that 86% of the variation ( natural ) of calcium content is explainable using the Linear model.

b) 10.878

c) S ≈ 1.99

Step-by-step explanation:

a) The slope = 0.144 , means that an increase in dissolved material by 1 mg/cm^2 will lead to an increase in Calcium content by 0.144 g/l

while the coefficient of determination = 0.869 , means that 86% of the variation ( natural ) of calcium content is explainable using the Linear model.

<u>B) Point estimate of true average calcium content </u>

Given that dissolved material = 50 mg/cm^2

= 3.678 + 0.144 * dissolved material

=  3.678 + 7.2 =  10.878

<u>C) Determine an estimate of error standard deviation </u>

Given that ; sum of squares ( SST ) = 320.398

                   COD ( r )  = 0.86

first;  calculate the value of SSE = SST - SST ( r^2 )

SSE = 320.398 - 320.398 ( 0.86) ^2

       = 83.43

Finally ; determine the estimate of error standard deviation

S^2 = SSE / n -2

      = 83.43 / 23 - 2

∴ S ≈ 1.99

6 0
3 years ago
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Answer:

0.18

Step-by-step explanation:

5 0
2 years ago
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anyanavicka [17]

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2 years ago
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The unit 6 quiz has ten questions worth 24 points the quiz consists of true false questions worth 2 points each and selected res
soldi70 [24.7K]

Good morning,

Answer:

<h2>the number of true false questions : 6</h2><h2>the number of selected response : 4</h2>

Step-by-step explanation:

Let x represent the number of true false questions

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we have to solve this system to work out the number of each type of question

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now ,we replace y by 4 in equation (1)

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3 0
3 years ago
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