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zvonat [6]
3 years ago
15

Zander wants to find out what the most popular sporting event is in the district’s high schools. He surveys a sample of the popu

lation. Under which condition is surveying a sample valid?
The population is small.
The population contains a large diverse group of people.
There are many different possible answers to the question.
There are some people in the population that do not like sports.
Mathematics
2 answers:
Cerrena [4.2K]3 years ago
7 0

Answer:

The answer would be B.

Step-by-step explanation:

I hope you all are doing great and staying positive. It will get better.

Akimi4 [234]3 years ago
3 0

Answer:

b

Step-by-step explanation:

i just did the test

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Help<br><br> (5a-3a^3)*(4a-1)
ivann1987 [24]

Answer:

-12a^{4}  + 3a^{3} + 20a^{2} -5a

Step-by-step explanation:

(5a-3a^{3} ) • (4a-1)

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3 0
3 years ago
PLEASE HELP/ANSWER! From 1980 to 1990, Lior’s weight increased by 25%. If his weight was k kilograms in 1990, what was it in 198
Elena-2011 [213]

The weight in 1980 is \frac{4k}{5} kilograms

<em><u>Solution:</u></em>

From 1980 to 1990, Lior’s weight increased by 25%

His weight is "k" kilograms in 1990

<em><u>To find: weight in 1980</u></em>

This is a percentage increase problem

Let "x" be the weight in kilograms in 1980

<em><u>The percentage increase is given by formula:</u></em>

\text{Percentage increase } = \frac{\text{Final value - initial value}}{\text{initial value}} \times 100

Here,

Initial value in 1980 = x

Final value in 1990 = k

Percentage increase = 25 %

<em><u>Substituting the values in formula,</u></em>

25 = \frac{k-x}{x} \times 100\\\\25x = 100(k-x)\\\\x = 4(k-x)\\\\x = 4k - 4x\\\\5x = 4k\\\\x = \frac{4k}{5}

Thus the weight in kilograms in 1980 is \frac{4k}{5}

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Help pleaseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
Ann [662]

Hey!

so for the first one its 60°, and for the second one its 1/6

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