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yulyashka [42]
3 years ago
13

What is the circumference of the circle? (use 3.14 for pi) r = 50mm

Mathematics
1 answer:
Alexxandr [17]3 years ago
7 0

Answer:

Step-by-step explanation:

circumference = 2\pir

= 2 × 3.14 × 50

= 31.4 mm

hope this helps

plz mark it as brainliest !!!!!!!!!!!

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a student walks 8 steps east 6 steps northeast 9 steps north west what is her displacement? include magnitude and direction
kati45 [8]

The displacement is 18.03 steps, and the direction is 47.25°

<h3>How to get the displacement?</h3>

We know that displacement is the difference between the final position and the initial position.

We assume the initial position (0, 0). Let's define the positive x-axis as the east and the positive y-axis as the north.

First, the student moves 8 steps east, so she is at:

(0 + 8, 0)

Then she moves 6 steps northeast, so the new position is:

(6*cos(45°) + 8,  6*cos(45°))

Finally, she moves 9 steps due north, so we have:

(6*cos(45°) + 8,  6*cos(45°) + 9)

Then the final position is:

(12.24, 13.24)

So the displacement is:

D = (12.24, 13.24) - (0, 0) =  (12.24, 13.24)

The magnitude of the displacement is:

|D| = \sqrt{12.24^2 + 13.24^2} = 18.03

So the magnitude is 18.03 steps.

And the direction is given by the arctangent of the quotient between the y-component and the x-component:

\theta = Arctg(13.24/12.24) = 47.25 \°

If you want to learn more about displacements:

brainly.com/question/4931057

#SPJ1

8 0
2 years ago
What is the difference between a day and a line segment
zepelin [54]

Hello!

I do believe you meant to say:

"What is the difference between a <em>ray</em> and a line segment?"

The difference between a ray and a line segment is:

A ray has one endpoint and continues in one direction. a ray is infinite

A line segment has two endpoints. a line segment is finite

I hope this helps, and have a nice day!

5 0
3 years ago
The zeros of function d are -3 and 8. Which expression could be a factor of function d?
marysya [2.9K]
X+3 or x-8
These answers will both work!
8 0
3 years ago
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FrozenT [24]

Answer:

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4 0
2 years ago
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Katyanochek1 [597]

Answer:

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Step-by-step explanation:

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