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mylen [45]
2 years ago
5

A teacher listed 28,30,32 and 36 as ages of the students in his class with frequencies 8,10,5 and 7 Respect Respectively.......

A:how many students were in the class ? B: what was the average age of the class? C: what was the range for the students? D:what was the modal age?​
Mathematics
2 answers:
Kamila [148]2 years ago
7 0

Answer:

A: There are 30 students in the class.

B: The average age of the class is 31.5.

C: The range goes from age 28 to age 36.

D: The modal age is 30.

Step-by-step explanation:

A: 8+10+5+7 = 30.

B: 8 + 30 + 32 + 36 = 126

    126/4 = 31.5

C: Lowest age is 28 and highest is 36, making that the range for students' ages.

D: The most frequently appearing age in the study is 30, which makes 30 the modal age.

Margaret [11]2 years ago
6 0

gawd daym that's a lot of students  

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2 years ago
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A company sells widgets. The amount of profit, y, made by the company, is related to the selling price of each widget, x, by the
defon

Answer:

Price of widget to break even= $37.9

Step-by-step explanation:

We are told that the equation representing the amount of profit, y, made by the company, in relation to the selling price of each widget, x is;

y = -8x² + 348x - 1705

Now, the company will break even when it has made no profit. That is when, y = 0

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0 = -8x² + 348x - 1705

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x = [-b ± √(b² - 4ac)]/2a

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We are told to approximate to nearest cent. Thus,

Price of widget = $37.87 ≈ $37.9

7 0
3 years ago
The value of a machine when new is £8000. The value depreciates by 10% each year. Work out its value after 3 years
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A doghouse is to be built in the shape of a right trapezoid, as shown below. What is the area of the doghouse?
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Answer:

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5 0
2 years ago
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We round up since we need a whole number of containers.

Answer: 20 containers

We can't really see question 3.

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