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GrogVix [38]
3 years ago
15

PLS HELP WILL MARK YOU BRIANLIEST

Mathematics
2 answers:
Rasek [7]3 years ago
8 0

Answer:

Area=210

perimeter=66

Step-by-step explanation:

A=a+b(h)/2

P=a+b+c+d

Citrus2011 [14]3 years ago
4 0

Answer:

Step-by-step explanation:

A=\frac{a+b}{2}h\\ =\frac{18+24}{2}*10\\ =210m^2(AREA)

P=a+b+c+d\\=18+24+12+12\\=66m(PERIMETER)

Perimeter is just the outside lengths

Area is the whole inside area which is larger than the perimeter

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Find the sum of the geometric series 40 + 40(1.005) + 40(1.005)^2 + ⋯ + 40(1.005)^11.
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Answer:

The sum is 493.4

Step-by-step explanation:

In order to find the value of the sum, you have to apply the geometric series formula, which is:

\sum_{i=1}^{n} ar^{i-1} = \frac{a(1-r^{n})}{1-r}

where i is the starting point, n is the number of terms, a is the first term and r is the common ratio.

The finite geometric series converges to the expression in the right side of the equation. Therefore, you don't need to calculate all the terms. You can use the expression directly.

In this case:

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Replacing in the formula:

\frac{a(1-r^{n})}{1-r} = \frac{40(1-1.005^{12})}{1-1.005}

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Step-by-step explanation:

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