3 years ago

Which of the following is an arithmetic sequence?

2 answers:

6 0

is equal to zero if. a) a, b, c are in arithmetic progression ... progression. d) α is a root of the equation ax2 + bx + c = 0.Missing: 4,

TiliK225 [7]3 years ago

3 0

<h3>Answer: Choice A) -4, -2, 0, 2</h3>

Explanation:

This is because we are adding the same thing to each term to get the next term. That is the common difference d = 2

second term = (first term)+d = -4+2 = -2
third term = (second term)+d = -2+2 = 0
fourth term = (third term)+d = 0+2 = 2

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8 divided by two fifths

Natasha2012 [34]

$8 = \frac{8}{1} \\ \\ two-fifths = \frac{2}{5} \\ \\ \\ Reverse: \frac{2}{5} to \frac{5}{2} \\ \\ \\ \\ Now, \frac{8}{1} ( \frac{5}{2} ) \\ \\ \frac{8(5)}{1(2)} = \frac{40}{2 } \\ \frac{40}{2} = 20 \\ \\ Answer: 20$

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