Solving Quadratic Equations Worksheet By Using The Quadratic Formula With Answers Page 10
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10SOLUTION:
The graph shows no correlation between the year
and the number of hurricanes because the points are
9-5 Solving Quadratic Equations by Using the Quadratic Formula
randomly spread out.
Determine whether each sequence is
arithmetic, geometric, or neither. Explain.
72. 20, 25, 30, ...
SOLUTION:
Check the difference and ratio between terms.
– 20 = 5
25
30 – 25 = 5
There is a common difference of 5 between the
terms. The sequence is arithmetic.
74. 200, 350, 650, …
SOLUTION:
Check the difference and ratio between terms.
– 200 = 150
350
650 – 350 = 200
There is no common difference between the terms.
There is no common ratio. This is neither an
arithmetic nor geometric sequence.
76. 2, 4, 16, …
SOLUTION:
Check the difference and ratio between terms.
– 2 = 2
4
16 – 4 = 12
There is no common difference between the terms.
There is no common difference or ratio between the
terms. This is neither a geometric nor an arithmetic
sequence.
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