The answer is C hope that helps
Answer
Given series,
12 + 18 + 24 + 30 + . . . + 198
first term of series, a = 12
common difference,d = 18- 12 = 6
Last term of the series, a_n or l = 198.
a) The expression of arithmetic sequence given by the explicit rule is
b) number of terms in the series
c) value of the series
Answer:
6.4 kilometer
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Step-by-step explanation:
See the attached figure.
Let Julian starts from point O (0,0)
Julian jogs 2 kilometers east ⇒ arrived to point A (2,0)
4 kilometers north ⇒ arrived to point B (2,4)
and then 7 kilometers west ⇒ arrived to point C (-5,4)
How far is Julian from his starting position?
So, it is required to find the distance OC
From the graph OC =
So, the distance from his starting position ≈ 6.4 km (to the nearest tenth of a kilometer)
Well if the student already finished 6 problems out of 15, there are 15-6 = 9 homework questions she still has to finish.
Still needs to complete: 9.
Already finished: 6
9 : 6.
Simplified: 3 : 2