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katovenus [111]
3 years ago
14

I need urgent help plzz the answer will be marked as brainliest

Mathematics
1 answer:
ludmilkaskok [199]3 years ago
6 0

  1. 51cm^2
  2. 27cm^2
  3. 78cm^2

to find the area of compound shapes, you break them apart and find each shapes area then add it together.

to find the area of a square, use A=l * w

to find the area of a triangle, use, A= 1/2 b * h

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Step-by-step explanation:

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Answer:

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3 years ago
In a teacher's math course, a linear regression line was calculated to predict
Marat540 [252]

The given equation is the best line that approximates the linear

relationship between the midterm score and the score in the final exam.

  • AJ's residual is 0.3, which is not among the given options, therefore, the correct option is. <u>E. None of these</u>.

Reasons:

The given linear regression line equation is; \hat y = 25.5 + 0.82·\mathbf{\hat x}

Where;

\hat y = Final exam score;

\hat x = The midterm score;

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Required:

The value of AJ's residual

Solution:

By using the regression line equation, we have;

The predicted exam score, \hat y = 25.5 + 0.82 × 90 = 99.3

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∴ AJ's residual = 99.3 - 99 = 0.3

AJ's residual = 0.3

Therefore, the correct option is option E;

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