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ludmilkaskok [199]
3 years ago
13

Hi could you help me please :)

Mathematics
1 answer:
yKpoI14uk [10]3 years ago
3 0

Answer:

Its B

Step-by-step explanation:

I remember doing this :)

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Shows that n+1Cn= mCn-1 + mCn
ArbitrLikvidat [17]

Answer:

I think the Question is incorrect; the left hand side of the equation should be

m+1Cn

Step-by-step explanation:

4 0
2 years ago
Ticket for football final selling well, on Thursday 4/7 of the tickets are sold, on Friday 1/4 of the tickets are sold, What fra
sergij07 [2.7K]

Answer:

5/28

Step-by-step explanation:

1/1 represents the whole amount of tickets.

4/7 are sold on Thursday.

an additional 1/4 are did on Friday.

fraction of available tickets on Saturday are therefore

1/1 - 4/7 - 1/4 = 4/1 - 16/7 - 1/1 = 28/1 - 16/1 - 7/1 = 5/1

that means out of 28 equal parts of the total number of tickets 16+7 = 23 parts have been sold.

so, there are only 5 out of the total 28 parts available on Saturday, and the fraction of available tickets is therefore 5/28.

we could have also tried to bring both fractions to the same denominator, and found that this is 28.

and then

4/7 + 1/4 = 4/4 × 4/7 + 7/7 × 1/4 =

= 16/28 + 7/28 = 23/28

and the whole is 28/28.

so we have 28/27 - 23/28 = 5/28 left.

surprise, surprise, it is the same result ...

4 0
2 years ago
Find the value of x.<br> 33°<br> 107°<br> x
Kaylis [27]

Answer:

140

Step-by-step explanation:

Angles in a triangle add up 180 :

180 = 107 + 33 + y

y = 180 - (107+33)

y = 180 - 140

y = 40

Angles on a straight line add up to 180 so :

180 = x + y

180 = x + 40

x= 180 - 40

x = 140

Hope this helped and have a good day

7 0
2 years ago
Read 2 more answers
Simplify<br>2⁴×2³/2⁵×2⁴<br>leaving your answer in index form​
igomit [66]

Answer:

hope this help

Step-by-step explanation:

2⁴×2³/2⁵×2⁴

= 2^{7}/2^{9}  = 1/2^{2}

7 0
3 years ago
Read 2 more answers
Wanna play a game on vc
andrey2020 [161]
Yes why not what’s your username
7 0
3 years ago
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