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beks73 [17]
2 years ago
6

If 80 students were surveyed, how many preferred math?

Mathematics
1 answer:
Zigmanuir [339]2 years ago
5 0

Answer: <em>12 students preferred math</em>

Step-by-step explanation:

<em>Take this equation</em>

<em>80(n)</em>

<em>n will equal (0.15) for the 15% surveyed who preferred math</em>

<em>80(0.15)</em>

<em>12</em>

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Answer:

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Step-by-step explanation:

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2 years ago
How many elements are in the union of five sets if the sets contain 10,000 elements each, each pair of sets has 1000 common elem
masya89 [10]

Answer:

40951

Step-by-step explanation:

Using the principles of inclusion - Exclusion

Where C(n,r)=n!/(n-r)!r!

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Total Number of elements in each pair including number repetition of sets is given as

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5 0
3 years ago
out of 30 questions on the maths test tomi knew the answer to 27 of them what percentage of questions did tomi know the answer f
Vedmedyk [2.9K]

Answer:

90

Step-by-step explanation:

\frac{27}{30}  \times 100

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8 0
2 years ago
Of the students attending a rock concert, 80 of them were 8th graders. Of these 8th graders, 25% of them were wearing ear plugs.
zhuklara [117]

Answer:

15%

Step-by-step explanation:

If 10% of the 25% of 8th graders who were male, 15% would be females because 25-10= 15. So, 15% would be my answer.

6 0
2 years ago
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Step-by-step explanation:

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2 years ago
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