Which formula represents the partial sum of the first n terms of the series: 2 + 6 + 10 + + (4n - 1)?
a) 4n^2 + 2n
b) 4n^2 + 1/2n
c) 2n^2 + 2n
d) 2n^2 + 1/2n

will give brainlist and 15 points to correct answer. .

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6

false

step-by-step explanation:

false.   two legs of the trapezoid would be congruent, but the other two would not.   were all the legs congruent, then we'd have a square; were the 2 shorter sides congruent and the 2 longer sides also congruent, we'd have a rectangle.

0.6

39mph

step-by-step explanation:

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