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Minchanka [31]
4 years ago
10

A 500.-kg roller coaster car starts from rest at the top of a 60.0-meter hill. Find its potential energy when it is halfway to t

he bottom.
Mathematics
1 answer:
Maslowich4 years ago
3 0
U=m*g*h= 500*9.8*30m
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Point A is the point of concurrency of the angle bisectors of ΔDEF.
amm1812

The correct answer is option A which is ZA = 3 cm

<h3>What is the triangle?</h3>

Triangle is a shape made of three sides in a two-dimensional plane. the sum of the three angles is 180 degrees.

The triangle is shown below.

From the triangle, A is the concurrency point of angle bisectors of all vertices.

Consider ΔAYD,

Using the Pythagorean theorem,

AD² = AY² + YD²

5² = AY² + 4²

25 = AY² + 16

AY² = 25 - 16

AY² = 9

AY = √9 = 3 cm

Consider triangles ADY and ADZ.

∠AYD ≅∠AZD=90

∠ADY≅∠ADZ ( Angle bisector)

AD ≡ AD (common side)

The two triangles are congruent by the AAS postulate.

Therefore, by CPCTE, AY=ZA=3 cm

To know more about triangles follow

brainly.com/question/17335144

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4 0
2 years ago
A high school principal reports that the average sat math score for last year’s graduating class is 520. a sample is taken of th
Murljashka [212]

Based on the average SAT Math score that the graduating classes got, the comparison is that this year's graduating class did better than last year's graduating class.

<h3>How can both classes be compared?</h3><h3 />

The average score is used to show the general trend of scores that students were able to attain.

The average score of 530 that this year's graduating class attained is higher than the average of the previous graduating year which is 520.

This means that on average, this year's graduating class did better than that of last year because their general trend was higher.

Find out more on interpreting averages at brainly.com/question/1136789

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3 0
2 years ago
Simplify:- (2√6÷√2 + √3) +( 2√6 ÷ √2 + √3 ) - (8√3 ÷ √6 + √3)
kicyunya [14]

Answer:

5 \sqrt{3}  - 4 \sqrt{2}

Step-by-step explanation:

Look at the picture

Hope it helps ;)

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3 years ago
Use the formula d=r*t to solve this problem.
ozzi

Answer:

D-186

Step-by-step explanation:

I hate edge

4 0
3 years ago
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What is the radius and diameter of the following circle?<br> 16 cm
denis23 [38]

Answer:

radius is 16

diameter is 32

Step-by-step explanation:

Your radius is the line starting from the point in the middle to any part of the edge of the circle. A diameter is when there is a long straight line from both ends reaching the edges of the circle crossing the point.

A diameter is just the radius doubled but except it all has to be straight coming reaching both edges.

A radius is half of a diameter.

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3 years ago
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