How many ways can five people, a,b,c,d, and e, sit in a row at a movie theater if c must sit to the right of but not necessarily
2 answers:
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Answer:
No, the given sequence is not arithmetic.
Step-by-step explanation:
The given sequence is
The first term is 5.
A sequence is an arithmetic, if the difference between any two consecutive terms are same.
The difference between terms are
Since the difference between consecutive terms are not same, therefore given sequence is not arithmetic.
Answer:
x = ± 5
Step-by-step explanation:
Given
x² - 4x - 25 = - 4x ( add 4x to both sides )
x² - 25 = 0 ( add 25 to both sides )
x² = 25 ( take the square root of both sides )
x = ± = ± 5