Answer:
r is the common ratio (in geometric sequence)
d is the common difference (in arithmetic sequence)
n is the term number
a1 is the value of the first term
an is the value of the nth term
Step-by-step explanation:
arithmetic sequence formula:
an=a1+d(n-1)
geometric sequence formula:
an=a1•(r)^(n-1)
Step-by-step explanation:
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Answer:
39
Step-by-step explanation:
4 is once 7 is more than 5 so u have to add 1 number to the 8 so 8 will become 9
Five divided by the difference of a number and 12 equals the quotiene of 10 and the sum of the number and five
The scale factor of two means you need to multiply the original length by 2:
9 x 2 = 18
The new length would be 18 cm.