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I am Lyosha [343]
3 years ago
12

At what minimum speed must a roller coaster be traveling when upside down at the top of a circle so that the passengers do not f

all out? Assume a radius of curvature of 7.6m
Mathematics
1 answer:
ohaa [14]3 years ago
7 0
So the base in your question or problem it ask to find the minimum speed that the roller coaster must have to let the passenger don not fall out when travelling upside down and the circle has a radius of 7.6 m. So based on the diagram, the total force must equal the mass of the roller coaster times the quotient of Velocity and the square of the radius of the circle and with that itself, the minimum speed of the coaster must greater than zero 
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The amount of money that Li spends on a video game depends on how many game he purchases. if Li has at most $90 to spend on game
siniylev [52]

Answer:

Hence Domain set for function is {0,1,2,3,4}

Step-by-step explanation:

Given:

Total amount spend =90

22.5 $ each game cost

To Find:

What is domain for the function

Solution:

Now domain mean all possible value for input so that it gives real output as per condition mentioned

So Our condition is that li spends money on video game depends on how many game he purchases

so  total money  spent on game is output

i.e in order to get that much amount of games.

If he spends 22.5 $ for each game and Total amount spent is 90

So 90/22.5=4 Now amount of game he would purchase will be 4

i.e range for lil is 0 to 4 wiht 90 $ in hand

So Domain set will be ranging from{0,1,2,3,4}

7 0
3 years ago
Suppose you invested $10,000 part at 6% annual interest and the rest at 9% annual interest. If you received $684 in interest aft
victus00 [196]
Assuming simple interest (i.e. no compounding within first year), then
At 6%, interest = 10000*0.06=$600
At 9% interest = 10000*0.09 = $900

Two ways to find the ratio
method A. let x=proportion at 6%
then
600x+900(1-x)=684
Expand and solve
300x=900-684=216
x=216/300=0.72 or 72%
So 10000*0.72=7200 were invested at 6%
10000-7200=2800 were invested at 9%

method B: by proportions
Ratio of investments at 6% and 9%
= 900-684 : 684-600
=216 : 84
= 18 : 7
Amount invested at 6% = 18/(18+7) * 10000 = 0.72*10000 = 7200
Amount invested at 8% = 7/(18+7)*10000=0.28*10000=2800
5 0
3 years ago
Help me find my answer
Sergeu [11.5K]

Step-by-step explanation:

3 cookies= 240 cal

∴ 1 cookie= 240÷3 cal

∴ 5 cookies= (240÷3) × 5

⇒ 240÷3= 80

⇒ 80 × 5= 400

[ans] 400 cal

4 0
3 years ago
NEEDING SMART PPL
lesya [120]

Answer:

D

Step-by-step explanation:

8 0
3 years ago
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75bdivided by 230 need this answer to
hammer [34]

Answer:

                                   0.32608696

Step-by-step explanation:

5 0
3 years ago
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