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irina [24]
3 years ago
14

Eurostar is a high-speed railway service connecting

Mathematics
1 answer:
zvonat [6]3 years ago
5 0

Answer:

730 trains are adequate to carry 350000 passengers.

Step-by-step explanation:

It gives us for the number of passengers, the number of seats per carriage and the number of carriages per train.  To change the units from passengers to trains without changing the value, we use the multiplicative identity (that is, 1).

350000 passengers

(350000 passengers) * 1

(350000 passengers) * ((1 carriage)/(32 passengers)) * ((1 train)/(15 carriages)

   [note:  passengers and carriages cancel. Leaving only trains]

(350000)*(1/32)*(1/15) trains       [note: I write this way to paste into MS Excel]

729.1667  trains                 [oh, but don’t just round this number either up or down]

   729 full trains can carry 729*32*15 = 349920 passengers

   730 full trains can carry 730*32*15 = 350400 passengers

Now, we can say that 730 trains are adequate to carry 350000 passengers.

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Nadusha1986 [10]
It’s a little complicated but here’s how it works:
Imagine a table with the intervals
0:4 , 4:6 , 6:7 , 7:10 , 10:13 (10 year intervals)
Then we have different rows
Class width: 4 , 2 , 1 , 3 , 3
Freq density: 0.2 , 0.5 , 1.2 , 0.7 , 0.3
So now calculate frequency where freq = class width * density
Freq: 0.8 , 1 , 3.6 , 2.1 , 0.9
So to find median find cumulative frequency
(Add all freq)
Cfreq = 8.4 now divide by 2 = 4.2
So find the interval where 4.2 lies.
0.8 + 1 = 1.8 + 3.6 = 5.6

So 4.2 (median) will lie in that interval 60-70 years.
7 0
2 years ago
How to change 13/20 to a percent
ASHA 777 [7]

Answer:

65%

Step-by-step explanation:

Since percentages are out of 100, you can write 13/20 as (13*5)/(20*5) = 65/100, which translates to 65%

8 0
2 years ago
Read 2 more answers
21 cans of tomato paste of the same size have weight of 7300 grams. What is the weight of 5 cans.
vesna_86 [32]

Answer:

answer is 347.6

Step-by-step explanation:

21/7300= 347.6

7 0
2 years ago
On average, Christopher scores 2 goals in a soccer game but, depending on how well the opposing team is playing, his goal total
SVETLANKA909090 [29]

Given:

Christopher scores 2 goals in a soccer game.

His goal total can vary from the average by 1 goal.

To find:

The absolute value equation can be used to calculate Christopher's maximum and minimum goals per game.

Solution:

Let Christopher scores x goals in a soccer game.

Then difference between actual goals and average goals is x-2.

His goal total can vary from the average by 1 goal.

Maximum number of goals = 2+1 = 3

Minimum number of goals = 2-1 = 1

It means, the difference between actual goals and average goals is either -1 and 1.

x-2=-1        ...(1)

x-2=1         ...(2)

Using (1) and (2),we get

|x-2|=1

Therefore, the correct option is C.

7 0
3 years ago
Your bank account has -15 in it. You deposit $7 per day. (a) How much money is in your account after 5 days? Show your work. (b)
Ugo [173]

(a) 7 x 5 = 35 - 15 = $20

(b) 20 / 4 = 5 days

3 0
3 years ago
Read 2 more answers
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