Mathematics: Calculate s24 for the arithmetic sequence in which a13=1.9 and the common difference is d=3.7.

Calculate s24 for the arithmetic sequence in

Ответ:

jeffreydaboy1223

10.03.2022

Mathematics

The correct answer option is 42.6.

Step-by-step explanation:

We know that in a arithmetic sequence, $a_{13}=1.9$ and the common difference is (d)=3.7 .

The standard form of an arithmetic sequence is given by:

a_n=a_1+(n-1)d

So we will substitute the given values in this formula to find the value of a_1 .

$a_{13}=a_1+(13-1)3.7$

1.9=a_1+(12)3.7

1.9=a_1+44.4

a_1=-42.5

Now finding the 24th term"

$S_{24}=a_1+(n-1)d\\\\S_{24}=-42.5+(24-1)3.7\\\\\\S_{24}=42.6$ .

Therefore, the 24th term of the given arithmetic sequence is 42.6.

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Ответ:

lunarfox270p16yqz

22.07.2021

Mathematics

787.5

Step-by-step explanation:

Givens

The bottom part of the figure is a trapezoid. Solve it first

a = 15 cm

b = 34 cm

h = 19 cm

Formula

Area = 1/2 (a + b)*h

Solution Trapezoid

area = 1/2 (15 + 34)*19

Area = 1/2 * 49 * 19

Area = 465.5

Remark

The top half of the figure is a parallelogram.

Formula

Area = base * height

Givens

base = 23

height = 14

Solution

Area = 23 * 14

Area = 322

Total Area

Total Area = 322 + 465.5

Total Area = 787.5

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Calculate s24 for the arithmetic sequence in which a13=1.9 and the common difference is d=3.7.

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