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sergejj [24]
3 years ago
6

The mean weight 20 students in a room is 65 kg one student one student who weight is 88kg went into the room what is the new mea

n of the weight of the students in the room round to nearest kilogram.
Mathematics
1 answer:
umka2103 [35]3 years ago
6 0

The new mean is 66.09

<u>Explanation:</u>

Mean weight of 20 students = 65kg

One student with 88kg entered the room.

New mean = ?

\frac{x_1+x_2+....+x_2_0}{20} = 65

\frac{x_1+x_2+....+x_2_0 + 88}{21} = ?

The above equation can further be written as:

x_1 + x_2 +....+x_2_0 = 65 X 20\\\\x_1 + x_2 +....+x_2_0 = 1300

New mean = \frac{1300 + 88}{21}

                 = 66.09

Therefore, the new mean is 66.09

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The ratio of the area of the <u>first figure</u> to the area of the <u>second figure</u> is 4:1

<h3>Ratio of the areas of similar figures </h3>

From the question, we are to determine the ratio of the area of the<u> first figure</u> to the area of the <u>second figure</u>

<u />

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From one of the theorems for similar polygons, we have that

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Learn more on Ratio of the areas of similar figures here: brainly.com/question/11920446

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The answer is 32.7 b so the answer is 105 over 10
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