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3 years ago

What is the quadratic regression equation that fits these data?

Mathematics

1 answer:

elena55 [62]3 years ago

4 0

9514 1404 393

Answer:

D. y = -0.32x² -1.26x +15.81

Step-by-step explanation:

This is one of those multiple-choice questions where you only need a vague idea of what the answer is supposed to look like.

In this case the answer must be a quadratic equation with a negative leading coefficient. (The parabola opens downward.)

The only answer choice that is a 2nd degree polynomial with a negative leading coefficient is choice D.

A: linear equation

B: exponential equation

C: quadratic that opens upward (positive leading coefficient)

D: quadratic that opens downward -- the answer you're looking for

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2 years ago

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Answer:

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3 years ago

If a rectangle has an area of 132 Units and a length of 11 units what is the width? If necessary round your answer to decimal pl

Rus_ich [418]

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3 years ago

Read 2 more answers

Find the value of x. Round the length to the nearest tenth. Diagram is not drawn to scale.

xxMikexx [17]

Answer:

(A) $x=7.2 ft$

Step-by-step explanation:

Given: A triangle whose base angle is 44° and hypotenuse is 10ft.

To find: The value of x.

solution: Using the trigonometry, we have

$\frac{x}{10}=cos44^{{\circ}}$

⇒ $x=10{\times}cos44^{{\circ}}$

⇒ $x=10{\times}0.72$

⇒ $x=7.2 ft$

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6 0

3 years ago

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Pavlova-9 [17]

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3 years ago