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2 years ago

Which of the following qualities does not describe a line? Select all that apply.

Mathematics

2 answers:

Masja [62]2 years ago

8 0

Answer:

A) Imaginary

C) Curved

D) Had two endpoints

Step-by-step explanation:

To answer this question, let's see the definition of a line.

A line is a one-dimension figure which has extend forever in both the directions in a plane.

We need to find the qualities does not describe a line.

Line cannot be imaginary.

It has endless points

Line is not a curved

The line has no width.

The line does not had endpoints.

Therefore, the following qualities does not describe a line.

A) Imaginary

C) Curved

D) Had two endpoints

Aleks04 [339]2 years ago

6 0

Well first the definition of a line is <span>is straight, </span><span>has no thickness, and </span><span>extends in both directions without end
</span><span>so therefore the answers are
endless
has no width

</span>

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$\bf \begin{cases}
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6. A sector of a circle is a region bound by an arc and the two radii that share the arc's endpoints. Suppose you have a dartboa

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Given the dartboard of diameter $20in$ , divided into 20 congruent sectors,

The central angle is $18^\circ$

The fraction of a circle taken up by one sector is $\frac{1}{20}$

The area of one sector is $15.7in^2$ to the nearest tenth

The area of a circle is given by the formula

$A=\pi r^2$

A sector of a circle is a fraction of a circle. The fraction is given by $\frac{\theta}{360^\circ}$ . Where $\theta$ is the angle subtended by the sector at the center of the circle.

The formula for computing the area of a sector, given the angle at the center is

$A_s=\dfrac{\theta}{360^\circ}\times \pi r^2$

<h3>Given information</h3>

We given a circle (the dartboard) with diameter of $20in$ , divided into 20 equal(or, congruent) sectors

<h3>Part I: Finding the central angle</h3>

To find the central angle, divide $360^\circ$ by the number of sectors. Let $\alpha$ denote the central angle, then

$\alpha=\dfrac{360^\circ}{20}\\\\\alpha=18^\circ$

<h3>Part II: Find the fraction of the circle that one sector takes</h3>

The fraction of the circle that one sector takes up is found by dividing the angle a sector takes up by $360^\circ$ . The angle has already been computed in Part I (the central angle, $\alpha$ ). The fraction is

$f=\dfrac{\alpha}{360^\circ}\\\\f=\dfrac{18^\circ}{360^\circ}=\dfrac{1}{20}$

<h3>Part III: Find the area of one sector to the nearest tenth</h3>

The area of one sector can be gotten by multiplying the fraction gotten from Part II, with the area formula. That is

$A_s=f\times \pi r^2\\=\dfrac{1}{20}\times3.14\times\left(\dfrac{20}{2}\right)^2\\\\=\dfrac{1}{20}\times3.14\times10^2=15.7in^2$

Learn more about sectors of a circle brainly.com/question/3432053

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