7,9,11,13......
A) arithmetic
B) geometric
C)both
D)neither
2. 2,1,1/2,1/4........
A. arithmetic
B. geometric
C. both
D. neither
OH UM I THING THE FIRST ONE IS A AND THE SECOND IS B
um help
To determine whether the given sequences in the questions are arithmetic, geometric, both, or neither, we need to analyze the pattern of the numbers in each sequence.
1. The first sequence is 7, 9, 11, 13...
To find out if it is an arithmetic sequence, we need to check if there is a common difference between consecutive terms. By subtracting each term from its preceding term, we can verify this.
9 - 7 = 2
11 - 9 = 2
13 - 11 = 2
As we can see, there is a common difference of 2 between each pair of consecutive terms. Therefore, the first sequence is an arithmetic sequence. The answer is A) arithmetic.
2. The second sequence is 2, 1, 1/2, 1/4...
To determine if this sequence is geometric, we need to check if there is a common ratio between each pair of consecutive terms. We can do this by dividing each term by its preceding term.
1 / 2 = 0.5
1/2 / 1 = 0.5
1/4 / 1/2 = 0.5
As we can see, there is a common ratio of 0.5 between each pair of consecutive terms. Therefore, the second sequence is a geometric sequence. The answer is B) geometric.
In summary:
1. The first sequence is an arithmetic sequence (A) arithmetic.
2. The second sequence is a geometric sequence (B) geometric.