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Annette [7]
3 years ago
14

Find the area of the figures, HELP MEEE no links, they cause bugs and viruses :3

Mathematics
2 answers:
Anna71 [15]3 years ago
6 0

Answer:

93.6

Semi circle - 31.81 (rounded)

Step-by-step explanation:

find the area of the triangle which is 1/2 6*5.2 -=15.6

there are 6 triangles so that means it has to be multiplied by 6 - 15.6*6 =  93.6

Use the semi cirlce formula- (pi*r^2)/2

In this situation that is (pi*4.5^2 )/2 = 31.81 (rounded)

Zolol [24]3 years ago
6 0

Answer:

i think the area of this figure would be 93.6

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Step-by-step explanation:

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4 0
3 years ago
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the first term in a geometric series is 64 and the common ratio is 0.75. Find the sum of the first 4 terms in a series.
Rufina [12.5K]

hi

u0 = 64       with  u(n+1) = un *0.75  

u3 =  64 *0.75^3   = 27

sum is :      64 *  ( 0.75^4 -1)  / 0.75-1  = 175

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6 0
4 years ago
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8 0
4 years ago
What is the sum of the series *picture attached*
Ksivusya [100]

Answer:

\sum_{n=4}^{18}(n+1)^2=2440

Step-by-step explanation:

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\Rightarrow \sum_{n=4}^{18}(n+1)^2=\sum_{n=1}^{18}(n+1)^2-\sum_{n=1}^{3}(n+1)^2

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Nikitich [7]
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