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Sonbull [250]
3 years ago
10

The following are the ages (years) of 5 people in a room: 23, 13, 17, 12, 15 A person enters the room. The mean age of the 6 peo

ple is now 22. What is the age of the person who entered the room?
Mathematics
1 answer:
Korolek [52]3 years ago
4 0

Answer: 52 years

Step-by-step explanation:

The formula for calculating mean = sum of each data / total number

Let the age of the sixth person be x , then

mean = 23 + 13 + 17 + 12 + 15 + x / 6

That is :

22 = 23 + 13 + 17 + 12 + 15 + x / 6

22 = \frac{80+x}{6}

80+ x = 22 x 6

80 + x = 132

x = 132 - 80

x = 52

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3 years ago
If the length of side a is 12 centimeters, measure of angle B = 36 degrees and measure of angle C = 75 degrees , what is the len
Fofino [41]
The length of side b is 7.61 m.

Here's how the length was calculated:

Let:

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In order to solve an AAS triangle, use the three angles, add to 180 degrees to find the other angle, then, use The Law of Sines to find each of the other two sides.

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b = 12.9 * 0.59

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8_murik_8 [283]

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Step-by-step explanation:

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Answer:

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