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spin [16.1K]
3 years ago
14

The student council at woodland middle school is planning a field trip. They polled randomly selected teachers and students and

asked what they want to eat for lunch. The result are shown in the table below. Which of the following statements is true?

Mathematics
2 answers:
ElenaW [278]3 years ago
6 0

19 percent of the people polled who preferred burgers were teachers.

Lemur [1.5K]3 years ago
5 0

Answer:

Option A is correct.

Step-by-step explanation:

According to results shown, we can say that option A is true.

In the burger column in above segment, we see that total number of students are 17 and total teachers are 4. Making it a total of 21.

So, \frac{4}{21}*100=19.04 ≈ 19% are teachers.

So, 19% of the polled people who preferred burgers were teachers.

Option B cannot be true as all the teachers were polled. Out of all 19% preferred burgers.

Option C is also not true because 19% was not from all the population. It was only from the teachers.

So, only option A is correct.

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Answer:

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The key to these types of questions is to keep proportions in mind.

To solve the first question, you want to find the proportion of the smaller triangle to the bigger triangle. The length of AE is 6cm, but the length of AD is (6+4) = 10cm. So the proportion of the bigger triangle to the smaller triangle is 10/6. So to find the lengths of the sides of the bigger triangle, we want to keep this number in mind.

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