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Maksim231197 [3]
3 years ago
5

In this picture, m∠AOC = 65° and m∠COD = (2x + 4)°. If ∠AOC and ∠COD are complementary angles, then what is the value of x?

Mathematics
1 answer:
dmitriy555 [2]3 years ago
4 0

Answer:

I think it's C hope it helps you

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Find the line y=a+bx which best approximates the data points
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Answer:

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Step-by-step explanation:

Here, the given data points,

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Let x represents the input value and y represents the output value,

So, the table that represents the given situation is,

x         -3            -1             1             2             4

y       -70          -42         -21         -9             14

By the above table,

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Let the equation of the line is,

y = bx + a

Where,

a=\frac{\sum y \sum x^2 - \sum x\sum xy}{n(\sum x^2)-(sum x)^2}

b=\frac{n\sum xy - \sum x \sumy}{n(\sum x^2)-(\sum x)^2}

n = number of data points = 5,

By substituting the values we get,

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b = 11.84246575 ≈ 11.84,

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y = 11.84x - 32.71

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Step-by-step explanation:

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