All categories

3 years ago

Which of the following statements about using a protractor are correct?

Mathematics

2 answers:

Leviafan [203]3 years ago

8 0

Answer:

(B) (C) and (D)

Step-by-step explanation:

An instrument for measuring angles, typically in the form of a flat semicircle marked with degrees along the curved edge is known as Protractor.

The protractor measures angles up to 180°, thus option A is incorrect that is the protractor measures angles more than 90°.

In order to construct any angle using the protractor, the vertex of the angle must be at 0° mark, thus option B is correct.

Option C is correct because a ray is a line that has one defined endpoint is called a ray and extends endlessly in one direction and that point must point at 0°.

Also, The protractor measures angles that open from left or from the right, thus option D is correct.

DedPeter [7]3 years ago

3 0

The protractor measures angles that open from left or from the right

You might be interested in

An aircraft on a reconnaissance mission takes off from its home base and flies 550 miles at a bearing of s 46° e to a location i

liubo4ka [24]

The total distance it flies, rounded to the nearest mile is: d. 1,692 miles .

<h3>Total distance</h3>

First distance= 550 miles (given)

Second distance=483 miles (given)

Now let find the third distance

Let x represent the third distance

Hence:

x/sin79 = 550/sin55

x= 659.1

Now let calculate the total distance

Total distance=550+483+659.1

Total distance= 1692.1

Total distance= 1692 miles (rounded)

Therefore the correct option is d.

Learn more about total distance here:brainly.com/question/4931057

#SPJ1

4 0

2 years ago

Which equation is an identity?

kirza4 [7]

Answer:

Option (3).

Step-by-step explanation:

Option (1).

3(x - 1) = x + 2(x + 1) + 1

3x - 3 = x + 2x + 2 + 1

3x - 3 = 3x + 3 [Not True]

Therefore, this equation is not an identity.

Option (2).

x - 4(x + 1) = -3(x + 1) + 1

x - 4x - 4 = -3x - 3 + 1

-3x - 4 = -3x - 2 [Not true]

Therefore, this equation is not an identity.

Option (3).

2x + 3 = $\frac{1}{2}(4x + 2) + 2$

2x + 3 = 2x + 1 + 2

2x + 3 = 2x + 3 [True]

Therefore, this equation is an identity.

Option (4).

$\frac{1}{2}(6x-3)=3(x+1)-x-2$

3x - 1.5 = 3x + 3 - x - 2

3x - 1.5 = 2x + 1 [Not true]

Therefore, this equation is not an identity.

6 0

3 years ago

Read 2 more answers

Simplify the problem given.

maks197457 [2]

Step Number 1. is to Simplify $\frac{4}{8} to \frac{1}{2}$

Step Number 2. <span>Simplify so you get </span> $\frac{x}{4} + \frac{5}{3}$

Done! :)

4 0

3 years ago

Given: ray FEH bisects

Ghella [55]

hhhahahshhehrhhehrhrhrhrh

7 0

3 years ago

A rope forms 2 30 feet lines.

Nikitich [7]

................ what else?

3 0

3 years ago