briarajeannette893
31.01.2020 •
Mathematics
Which answer describes this type of series -20-18-15-
a).arithmetic
b).geometric
c).neither
d).both
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Ответ:
In the sequence -20, -18, -15, -11..., there is not a common difference. This is because there is a +2 increase between -20 and -18 but a +3 difference between -18 and -15, then +4 increase between -15 and -11.
This means it is not Arithmetic, which means it can't be both either.
This leaves us with B and C, so we have to see if there is a common ratio.
To find common ratio, divide any 2 terms in the sequence.
Let's choose -18 and -15.
-18 / -15 = 1.2
Now let's see if this works for each term.
To do this, multiply each term by 1.2 to see if it results in the next term.
-20 • 1.2 = -24 This doesn't work, so there is no common ratio.
This means the sequence is neither Arithmetic nor Geometric.
So the answer is C. Neither.
Ответ:
Ответ:
urban people were mostly involved in jobs that required phyisical labor they are paid daily wages (minimum wages) from which they evoke their living. daily wages also mean that the day they don't turn up for work ,even due to sickness, they aren't paid anything.