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Alexandra [31]
3 years ago
7

What numbers are perfect numbers

Mathematics
1 answer:
alekssr [168]3 years ago
5 0
A perfect number is a number where the sum of its divisors is equal to the number.

For example 6: 1 + 2 + 3 = 6

Another example is 28: 1 + 2 + 4 + 7 + 14 = 28

Here is a short list of perfect numbers: 6, 28, 496, 8128, <span>33550336, and the numbers get way bigger as we go on.</span>

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What is the recursive formula for this geometric sequence? –4, –24, –144, –864, ...
lesya [120]

the question does not present the options, but this does not interfere with the resolution

Let

a1=-4

a2=-24

a3=-144

a4=-864

a5=?


we know that

a2/a1=-24/-4----> 6-------> a2=6*a1

a3/a2=-144/-24---> 6-----> a3=6*a2

a4/a3=-864/-144---> 6----> a4=6*a3

therefore

a5=6*a4-----> a5=6*(-864)------> a5=-5184


hence 

the formula is

an=6*a(n-1)

<span>n and (n-1) are subscripts </span>

3 0
3 years ago
Tom says that he needs 6 rolls to obtain each possible outcome on a 6-sided die. On the fourth roll, he rolls his second "3”. To
laila [671]
Tom is incorrect

He keeps getting the same number of 1:6 on each roll.
8 0
2 years ago
What is the answer to 1935 divided by 54
Degger [83]

35.833

0 0 3 5. 8 3 3

5 4 1 9 3 5. 0 0 0

 − 0            

   1 9          

 −   0          

   1 9 3        

 − 1 6 2        

     3 1 5      

   − 2 7 0      

       4 5 0    

     − 4 3 2    

         1 8 0  

       − 1 6 2  

           1 8 0

         − 1 6 2

             1 8

7 0
3 years ago
Can u please answer the question
Sergeeva-Olga [200]

Answer:  6 pieces

=======================================================

Explanation:

3/4 = 6/8 after multiplying both parts by 2

We have a ribbon that is 6/8 of an inch long. We want to cut it into 1/8 inch pieces. We can see there will be exactly 6 pieces

Note how 6*(1/8) = 6/8

Or we can think of it as "we have a ribbon that is 6 units long and we want to cut it into pieces that are 1 unit each, so we'll have 6 pieces total". Replace "unit" with "1/8 inch" and you'll have the same idea.

6 0
3 years ago
Read 2 more answers
What is 2 to the 10 power
Svet_ta [14]
2^10 is equal to 1024 (one thousand and twenty four)
3 0
2 years ago
Read 2 more answers
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