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ratelena [41]
2 years ago
14

30. The average age of 20 boys is 15.

Mathematics
2 answers:
Alex787 [66]2 years ago
6 0

Answer:

D. 300 years

Step-by-step explanation:

Mean = \frac{sum of observations}{no. of observations\\}

Here we know the mean which is 15 and the number which is 20

Total age = 15 × 20

Total Age = 300 years

Simora [160]2 years ago
4 0

Answer:

D. <em>30</em><em>0</em><em> </em><em>Years</em> is the correct answer.

Step by Step Explanation:

20×15= 300

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Answer:

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6 0
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What does i^16 equal and how do you get the answer​
svp [43]

Answer:

i^16 = 1

Step-by-step explanation:

i = √-1 = i

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i^3 = i^2 * i^1 = -1 * √-1 = -√-1 or -i

i^4 = i^2 * i^2 = -1 * -1 = 1

the order keeps following......

i^16 = 1

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7 0
3 years ago
What is the equation in point-slope form of the line passing through (2, 5) and (−1, 8)?
julsineya [31]
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now we sub
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4 0
2 years ago
Read 2 more answers
Help please!!! A bag contains 50 marbles, 10 of which are blue, 8 are red, 20 are green, and 12 are purple. Marcie takes a marbl
Andru [333]

Answer:

A


Step-by-step explanation:

We would need to multiply the number of trials (which is 500) by the probability of choosing a red in 1 try from the information given.


<em>There are 50 in total, and 8 of them are red, so:</em>

P(red) = \frac{8}{50}=0.16


<em>Now we multiply this with 500 to get:</em>

500*0.16=80


The correct answer is A.

5 0
3 years ago
Read 2 more answers
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