Convert 490 square meters to square dekameters please show work, if you can't thats okay
2 answers:
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A
this is a geometric sequence since there exists a common ratio r between the terms
r = =
=
= 3
B
to obtain the next term in the sequence multiply the previous term by 3
= 3
← recursive rule
C
the n th term of a geometric sequence is
=
where is the first term in the sequence
= 7 ×
← explicit rule
Answer:
680
Step-by-step explanation:
Use the binomial coefficient where you choose numbers out of
possible numbers and find the total amount of combinations since order does not matter:
Thus, you can make 680 three-non-repeating-number codes