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Kamila [148]
3 years ago
15

A 500.-kilogram roller coaster starts from rest at the top of an 80.0-meter hill. What is its potential enegy halfway down the h

ill?
Mathematics
2 answers:
Anastaziya [24]3 years ago
8 0

Answer:

the answer is 200kg


Step-by-step explanation:


nydimaria [60]3 years ago
5 0

Answer: 392,000 J

Step-by-step explanation:

Ep=mgh

Ep=500(mass)9.8(gravity)80(height)

500•9.8•80=392,000 J

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Picture shows the questions
SpyIntel [72]

Answer:

121 cm

Step-by-step explanation:

12x13=156

7x5= - 35

________

121

5 0
3 years ago
You buy 2.3 pounds of apples for<br>$1.43 per pound. How much do<br>you spend?​
saveliy_v [14]

Answer:

$3.30 ($3.289)

Step-by-step explanation:

2.3 times 1.43 = 3.289 rounded to 3.30

6 0
4 years ago
g A law firm has six senior and seven junior partners. A committee of three partners is selected at random to represent the firm
expeople1 [14]

Answer:

133/143

Step-by-step explanation:

Let S be the sample space

Let E be the event of selecting three committee partners with at least one junior partner.

Partners in the law firm include:

Senior partners = 6

Junior partners = 7

Total partners = 13

n(S) = number of ways of selecting 3 partners from 13 = 13C3

n(S) = 13C3 = 13!/(10!3!) = (13x12x11)/(3x2x1) = 286

To get n(E) i.e least 1 junior partner in the selected committee, we may have:

(2 senior and 1 junior) or ( 1 senior and 2 junior) or (3 junior).

Therefore, the required number of way is given below:

= (6C2 x 7C1) + (6C1 x 7C2) + 7C3

= [(6x5)/2 x 7] + [6 x (7x6)/2] + [(7x6x5)/(3x2)]

= 105 + 126 + 35

n(E) = 266

Therefore, the probability P(E) that at least one of the junior partners is on the​ committee is given below:

P(E) = n(E) /n(S)

P(E) = 266/286

P(E) = 133/143

5 0
3 years ago
Factor this expression completely<br><br>-21x + 28​
pickupchik [31]
-21x+28 is factored into:

-7(3x-4)

3 0
3 years ago
Read 2 more answers
What percent of 33 is 34
Viktor [21]
11.22 is 33% of 34 if that is what youre asking
3 0
3 years ago
Read 2 more answers
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