3 years ago

What property is this 5(2+3)=(2+3)5

Mathematics

1 answer:

Nana76 [90]3 years ago

8 0

5(2 + 3) = 5(2 + 3)

10 + 15 = 10 + 15

25 = 25 ✔️

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John left Accra at 10:45am and reached Freetown at 16:50pm. How long did the journey last?

Basile [38]

Answer: 6hrs 5min

Step-by-step explanation:

Military time.

10:45 to 11:45= 1hr

10:45 to 12:45= 2hr

10:45 to 13:45 ( 1:45)= 3hr

10:45 to 14:45 (2:45)= 4hrs

10:45 to 15:45 (3:45)= 5hrs

10:45 to 16:45 (4:45)= 6hrs + 5min= 6hrs n 5min

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3 years ago

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3 years ago

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AveGali [126]

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3 years ago

is picking out some movies to rent, primarily interested in horror films and comedies. He has narrowed down his selections to 15

tigry1 [53]

Answer: 31,365

Step-by-step explanation:

Given : The number of horror films = 15

The number of comedies = 18

Then , the number of different combinations of 4 movies can he rent if he wants at least two comedies is given by :-

$^{18}C_2\times ^{15}C_2+^{18}C_3\times ^{15}C_1+^{18}C_4\times ^{15}C_0\\\\=\dfrac{18!}{2!(18-2)!}\times\dfrac{15!}{2!(15-2)!}+\dfrac{18!}{3!(18-3)!}\times\dfrac{15!}{1!(15-1)!}+\dfrac{18!}{4!(18-4)!}\times\dfrac{15!}{0!(15-0)!}\\\\=16065+12240+3060=31365$

Hence, the number of different combinations of 4 movies can he rent if he wants at least two comedies = 31,365

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2 years ago