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Rudik [331]
3 years ago
15

At a stop in New York City, 50 people board a subway every 10 minutes. After how long will 250 people have boarded a train at th

at stop? A. 20 minutes B. 40 minutes C. 50 minutes D. 1 hour
Mathematics
1 answer:
Rainbow [258]3 years ago
3 0

Answer:

C. 50 minutes

Step-by-step explanation:

each time, 50 people can aboard. to calculate how many times people aboard, divide 250 by 50, equals 5

each time to aboard takes 10 minutes, so multiply 5 by 10 equals 50minutes.

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Two sides of a triangle have lengths 6 and 17. Which expression describes the length of the third side?
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Depending on the type of triangle for an acute triangle I'd say b if an right c and if its obtuse d
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4 years ago
A deck of cards contains 30 cards with labels 1, 2, . . . , 30. Suppose that somebody is randomly dealt a set of 7 cards of thes
____ [38]

\displaystyle |\Omega|=\binom{30}{7}=\dfrac{30!}{7!23!}=\dfrac{24\cdot25\cdot\ldots\cdot30}{2\cdot3\cdot\ldots\cdot 7}=2035800

a)

\displaystyle\\|A|=\binom{15}{3}\cdot \binom{15}{4}=\dfrac{15!}{3!12!}\cdot\dfrac{15!}{4!11!}=\dfrac{13\cdot14\cdot15}{2\cdot3}\cdot\dfrac{12\cdot13\cdot14\cdot15}{2\cdot3\cdot4}=13\cdot7\cdot5\cdot13\cdot7\cdot15=621075\\\\P(A)=\dfrac{621075}{2035800}=\dfrac{637}{2088}\approx30.5\%

b)

\displaystyle\\|A|=\binom{10}{7}\cdot 3^7=\dfrac{10!}{7!3!}\cdot2187=\dfrac{8\cdot9\cdot10}{2\cdot3}\cdot2187=4\cdot3\cdot10\cdot2187=262440\\\\P(A)=\dfrac{262440}{2035800}=\dfrac{243}{1885}\approx12.9\%

4 0
2 years ago
A solid with a volume of 11cm is placed in a graduated cylinder with 50mL of water. The solid will displace how much water?
Tanya [424]

Answer: i think 4.54cm

Step-by-step explanation:

8 0
4 years ago
Need help on this lovesss
Ludmilka [50]

Answer:

See We have to use rule 6n+1

where n represents position

that is, for 1st term n=1 , for 2nd term n=2 and so on

Now put n=1 in 6n+1

6(1) +1

= 6 +1

=7

Now put n=2

6(2) +1

= 12+1

=13

So, Sequence becomes

7,13,.....

5 0
3 years ago
What is 2 divided by 1054 in long division
Trava [24]
Hello!

I have attached an image with the long division for you :)

I hope it helps :))

7 0
3 years ago
Read 2 more answers
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