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Bess [88]
3 years ago
12

1. The weights of 30 students in a class ( in Kg ) are as follows. 42 , 52, 46 ,63, 47 ,40,50,63,52, 57,40,47,55 ,52, 49, 42,56,

51 ,48,47, 44,54, 54,62, 60,58,56,60,58,53.
Answer the following questions:
What weight range do most students lie in?​
Mathematics
2 answers:
kolbaska11 [484]3 years ago
8 0

Answer:

47 to 58 Kg.

Step-by-step explanation:

First arrange in ascending order:

40 40 42 42 44 46 47 47 48 49 50 51 52 52 52 53 54 54 55 56 56 57  58 58 60 60 62 63 63

The median value is 52.5.

The lower quartile is 47  and the higher quartile is 58.

Nat2105 [25]3 years ago
7 0

Answer:

Most of the students lie in the range of 50-60.

Step-by-step explanation:

Arrange all the data ib ascending order like 40, 40, 42, 42... and so on.

Assign the data to their respective ranges.

For example: 40 belongs to 40-50 range.

Also note that the maximum number in a range belongs to the next range as 50 does not belong in 40-50 it belongs in 50-60 range.

After assigning the values count the numbers of values in each range.

The range having the max. quantity of students is the final answer.

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What is a cubic polynomial function in standard form with zeros 1 -2 and 2?
Zolol [24]

Answer:

f(x) = x³ - x² - 4x + 4

Step-by-step explanation:

Given the zeros of a polynomial say x = a, x = b, x = c then

(x - a), (x - b), (x - c) are the factors of the polynomial and

f(x) is the product of the factors

here x = 1, x = - 2, x = 2, hence

(x - 1),(x + 2), (x - 2) are the factors and

f(x) = a(x - 1)(x + 2)(x - 2) ← a is a multiplier

let a = 1 and expand the factors

f(x) = (x - 1)(x² - 4)

     = x³ - 4x - x² + 4

     = x³ - x² - 4x + 4 ← in standard form

7 0
3 years ago
What are the solutions of this equation 16-2x^2=-64
xenn [34]

Answer:

x = ± 2\sqrt{10}

Step-by-step explanation:

Given

16 - 2x² = - 64 ( subtract 16 from both sides )

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x² = 40 ( take the square root of both sides )

x = ± \sqrt{40} = ± \sqrt{4(10)} = ± 2\sqrt{10}

5 0
3 years ago
The Reunion Tower is one of the most recognizable landmarks in Dallas, Texas due to the giant sphere that sits atop the structur
ValentinkaMS [17]
The volume of a sphere uses the following formula:

V = \frac{4}{3}\pi r^{3}

Because the question asks to use 3.14 in place of pi, the formula will now look like this:

V = (\frac{4}{3})(3.14)r^{3} = 4.18\overline{66} r^{3}

We are given a diameter of 118 feet. The radius is half of the diameter, so divide the diameter by 2 to find the radius:

118 \div 2 = 59
r = 59

Plug this value into the formula, and solve with a calculator:

4.18\overline{66} \times 59^3 = 4.18\overline{66} \times 205379 = 859853.413

Although our result is one cubic foot off, the answer is <span>A. 859,852ft^3.

(859,852 is the result if the constant in the given formula is 4.18666, but the result with infinitely repeating numbers is 859,853.)</span>
6 0
3 years ago
Need help with question
svetoff [14.1K]

Answer:

15 14/15

Step-by-step explanation:

8 + 7 = 15

1/3 + 3/5

5/15 + 9/15

14/15

15 + 14/15 = 15 14/15

5 0
2 years ago
Solve 322 +63 +3=0 using the Quadratic Formula.<br> X=
Licemer1 [7]

Answer:

Step-by-step explanation:

322+63 ?= 0

385≠0

False

7 0
3 years ago
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