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mote1985 [20]
2 years ago
10

HELP!!!

Mathematics
1 answer:
tatuchka [14]2 years ago
8 0

Answer:

6.34

Explanation:

6.34615384615  rounded is 6.34

so therefore 6.34*26 is 164.84 which is more closer to 165. But if you happen to multiply 6.35*26 it is 165.1 but it goes over the right number by 0.01. So stick to 6.34 and have under exceeded amount.

<u><em>Can I please have brainliest.</em></u>

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3 years ago
Find the least squares regression equation using the school year (in number of years after 2000) for the input variable and the
Ad libitum [116K]

<u>Answer-</u>

<em>The least squares regression equation using the school year (in number of years after 2000) for the input variable and the average cost (in thousands of dollars) for the output variable is "y=0.937x+12.765" .</em>

<u>Solution-</u>

The independent variable / input variable= x = Number of years after 2000 ( = year-2000)

The dependent variable / output variable = y = Average cost in thousands of dollars

(The table has been attached herewith.)

To find the regression equation for a group of (x,y) points,

We have to calculate the slope and y-intercept, then we can put those values in the equation y = mx + c ( Slope - Intercept formula)

We know that,

Slope=m=\frac{N\sum xy -\sum x\sum y}{N\sum x^{2}- (\sum x)^{2}}

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m=\frac{(8 \times 1020.206)-(52 \times 150.894)}{(8 \times 3810)-(52^2)}

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Putting the values,

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Step-by-step explanation:

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C = {x | x = 5}

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Union of two sets contains all the elements of both sets.

Intersection of two sets contains only common elements of both sets.

The matching is shown below.

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1.     A ∪ B                         {x | x < 1 or x ≥ 5}

2. A ∪ C                         {x | x < 1 or x = 5}

3. B ∪ C                         {x | x ≥ 5}

4. A ∩ B                         Ø

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