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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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If one is subtracted from seven times a certain number,
prohojiy [21]

Answer:

The number is 8

Step-by-step explanation:

5 0
3 years ago
What is 10% of 50 ??
navik [9.2K]

Answer:

5

Step-by-step explanation:

10% = 0.1

0.1*50 = 5

6 0
3 years ago
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2 candy bars cost $0.98. At this rate, how much do 5 candy bars cost? The total cost for five candy bars is?
klio [65]

Answer:

$2.45

Step-by-step explanation:

First divide the cost by number of items. you shall get $0.49

Now multiply the cost of 1 candy bar into 5 and you shall get $2.45.

6 0
2 years ago
1 tank of propane holds 5 gallons and will last 12 hours. how many gallons of propane is needed for 240 hours.
MAVERICK [17]

5 gallons        x gallons

------------- = ----------------

12 hours       240 hours


using cross products

5 * 240 = 12 * x

1200 = 12 x

divide each side by 12

1200/12 = 12x/12

100 =x

You will need 100 gallons

8 0
3 years ago
Read 2 more answers
The price of a computer component is decreasing at a rate of 15​% per year. State whether this decrease is linear or exponential
Margaret [11]

Answer:

Since the price is given by an exponential function, the decline in price is exponential.

The component will cost $36.8475 in three years.

Step-by-step explanation:

The equation for the price of a component has the following format:

P(t) = P(0)(1-r)^{t}

In which P(t) is the price after t years, P(0) is the initial price, and r is the rate that the price decreases.

Since the price is given by an exponential function, the decline in price is exponential.

The price of a computer component is decreasing at a rate of 15​% per year.

This means that r = 0.15

Component costs ​$60 ​today

So P(0) = 60. Then

P(t) = P(0)(1-r)^{t}

P(t) = 60(1-0.15)^{t}

P(t) = 60(0.85)^{t}

What will it cost in three​ years?

This is P(3).

P(t) = 60(0.85)^{t}

P(3) = 60(0.85)^{3} = 36.8475

The component will cost $36.8475 in three years.

6 0
3 years ago
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