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SOVA2 [1]
3 years ago
10

News cameras take an overhead picture of a part of a crowd at an outdoor event. Journalists then count the number of people in t

he picture and use the sample to estimate the total number of people in the crowd. This process is an example of
Mathematics
2 answers:
natta225 [31]3 years ago
8 0

Answer:

D, cluster sampling

Step-by-step explanation:

aliina [53]3 years ago
4 0

Answer:

cluster system

Step-by-step explanation: For edgunity

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Answer:

Option A. 432\ units^{2}

Step-by-step explanation:

we know that

The area of the irregular figure is equal to the area of two trapezoids

The area of trapezoid is equal to

A=\frac{1}{2}(b1+b2)h

where

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h is the perpendicular distance between the parallel bases

<u>Find the left trapezoid area</u>

A1=\frac{1}{2}(4+25)(16)=232\ units^{2}

<u>Find the trapezoid area on the right</u>

A2=\frac{1}{2}(25+15)(10)=200\ units^{2}

The area of the irregular figure is

A=A1+A2=232\ units^{2}+200\ units^{2}=432\ units^{2}

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Step-by-step explanation:

it cant be simplified

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Step-by-step explanation:

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