The nth term is -4n+102. Method: To find the nth term (Tn) of the sequence, multiply n by the pattern of change in the sequence from left to right (-4). Then, substitute n for a term, for example, term 2. Follow the first step (-4n) which will give -8. Then you add or subtract to equal the number of that term (94). -8+x=94. x=102. Therefore, the formula for the nth term is -4n+102. To prove it, try with any term. Term 3 (the number is 90). 3 x -4 = -12 -12 + 102 = 90 Tada!
83.7
100-3(1) = 100-3 = 97 100-3(2) = 100-6 = 94 100-3(3) = 100-9 = 91 Over here N is the first 3 terms, 1, 2, and 3.
24. It is the difference between 97 and 73, the highest and lowest numbers in the set.
89+84+90+94+98=455 455/5= 91 91 is the mean.
the nth term of the sequence 98, 94, 88, 80 can be expressed as 98 - (n - 1) * 2.
85,88,91,94,95,98
94 and you skip it by 8's
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The nth term is -4n+102. Method: To find the nth term (Tn) of the sequence, multiply n by the pattern of change in the sequence from left to right (-4). Then, substitute n for a term, for example, term 2. Follow the first step (-4n) which will give -8. Then you add or subtract to equal the number of that term (94). -8+x=94. x=102. Therefore, the formula for the nth term is -4n+102. To prove it, try with any term. Term 3 (the number is 90). 3 x -4 = -12 -12 + 102 = 90 Tada!
83.7
90.
212.1111111 is the mean.
90, 91, 92, 93, 94
100-3(1) = 100-3 = 97 100-3(2) = 100-6 = 94 100-3(3) = 100-9 = 91 Over here N is the first 3 terms, 1, 2, and 3.
88
The composite numbers greater than 88 and less than 95 are: 90, 91, 92, 93, 94.(88 and 95 are themselves also composite.)