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nataly862011 [7]
2 years ago
14

A survey of students' favorite sports was taken from a random sample of

Mathematics
1 answer:
White raven [17]2 years ago
6 0

Answer:

129

Step-by-step explanation:

Considering the survey to be representative, you can simply multiply the share of students <em>p</em> preferring “Track & Field” with the whole school population at the same time to estimate the number of such students in the whole school.

First we need to find the relative share <em>p</em> of such answers in the study by dividing it by the sum of answers, assuming that the table is complete for that random sample:

<em>p</em> = 4/(8 + 5 + 4) = 4/17

Then for the whole school we get 550 <em>p</em> ≈ 129.4

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Evaluate the expression: -0.75 - (-1 7/8)
m_a_m_a [10]

Answer:

9/8

Decimal form: 1.25

Mixed Number form: 1 1/8

Good luck, hope this helped!

4 0
2 years ago
In the number 3.072 the digit 7 is in the ? place and the digit 2 is in the ? place.​
notka56 [123]

Answer:

7= Hundredths

2=Thousandths

8 0
3 years ago
Airplane tickets to Hawaii cost $500. If my mom pays for 3/4 of my ticket, how much will She have to pay?
dolphi86 [110]

Answer: $375

Step-by-step explanation:

If you multiply 125•4 it gives you 500 so just subtract 125 from 500 to get your answer

5 0
3 years ago
Read 2 more answers
1) You are designing a new kiddie soccer arena. The area of the rectangular
nikdorinn [45]

Answer:

The length of the rectangular field is 12 ft and the width is 5 ft.

Step-by-step explanation:

The area of a rectangle is:

\text{Area} = \text{length}\times \text{width}

The area of a rectangular field is, <em>A</em> = 60 ft.

The length of the field is:

l = w + 7

Compute the width of the field as follows:

\text{Area} = \text{length}\times \text{width}

60=(w+7)\times w\\\\60=w^{2}+7w\\\\w^{2}+7w-60=0\\

Factorize the last equation by splitting the middle term as follows:

w^{2}+7w-60=0\\w^{2}+12w-5w-60=0\\w(w+12)-5(w+12)=0\\(w-5)(w+12)=0

Now, since the width of rectangular field cannot be negative, the width is 5 ft.

Compute the length as follows:

l = w + 7

 = 5 + 7

 = 12

The length of the rectangular field is 12 ft.

7 0
2 years ago
Find the area of the figure
pentagon [3]
For the square area we have:
12.12=144
and for the rectangle we have:
4.11=44
3 0
1 year ago
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