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vagabundo [1.1K]
3 years ago
7

to gather data for a statistics project, a student asked 10 friends how many hours of sleep they got on the previous night. The

data are shown in the following list. 7 6 5 9 3 4 7 9 5 8 What is the interquartile range (IQR IQR ) of the number of hours of sleep shown in the list?
Mathematics
1 answer:
vovikov84 [41]3 years ago
7 0

Answer:

3

Step-by-step explanation:

Given the data: 7 6 5 9 3 4 7 9 5 8

INTERQUARTILE RANGE (IQR) = Q3 - Q1

Rearranging the data: 3, 4, 5, 5, 6, 7, 7, 8, 9, 9

Q3 = 0.75(n+1)th term

Q3 = 0.75(10 + 1) th term

Q3 = 0.75(11)th term = 8.25th term

Taking the 8th term = 8

Q1 = 0.25(11)th term = 2.75th

Taking the average of the 8th and 9th term:

(5 + 5) / 2 = 10/2 = 5

Q3 - Q1 = (8 - 5) = 3

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How do u find length of a obtuse angle
wolverine [178]

Answer:

An obtuse triangle is a triangle that has a single obtuse angle, which is an angle that measures more than 90 degrees and less than 180 degrees. Obtuse triangles, also referred to as oblique triangles, can be recognized by their having a single significantly larger angle and two smaller angles. Since every triangle has a measurement of 180 degrees, a triangle can only have one obtuse angle. You can calculate an obtuse triangle using the lengths of the triangle's sides.

Square the length of both sides of the triangle that intersect to create the obtuse angle, and add the squares together. For example, if the lengths of the sides measure 3 and 2, then squaring them would result in 9 and 4. Adding the squares together results in 13.

Square the length of the side opposite the obtuse angle. For the example, if the length is 4, then squaring it results in 16.

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Will someone please answer this ASAP??
nirvana33 [79]
SA = 2bA (base area) + LA (lateral area)

bA = r^2*pi = 13^2pi = 169pi cm^2

LA = 2r*pi*h = 2*13*pi*88,4 = 2298,4pi cm^2

SA = (2*169pi)+2298,4 pi = 338pi+2298,4pi = 2636,4pi
3 0
3 years ago
7.
liraira [26]

Answer:

A geometric series has a positive common ratio r. The series has a sum to infinity of 9 and the

sum of the first two terms is 5. Find the first four terms of the series.

Step-by-step explanation:

A geometric series has a positive common ratio r. The series has a sum to infinity of 9 and the

sum of the first two terms is 5. Find the first four terms of the series.

8 0
3 years ago
8. Solve for the given variable in the following equations. (4 marks total)
____ [38]

Step-by-step explanation:

  • c

V= π*r²*h

V/π = r²*h

v/(π*r²) = h

  • d

\frac{x+y}{3} = 5

x+y = 15

x = 15-y

6 0
3 years ago
1. Which of these transformations are isometries? The diagrams are not drawn to scale.
lisov135 [29]

In math, an isometry is a congruent transformation in which the distance (or length) and the angle is preserved or remains the same even after the transformation.

The transformation can be translation, rotation, reflection, etc.

Let us not use this definition of isometry to answer our question, one at a time.

(I) In here, as we can see the distances 10 and 5 and the angle 43 degrees has been preserved. So, <u>this is an isometry.</u>

(II) In here, distances have been halved, so this is<u> not an isometry</u>, even though the angles have been preserved.

(III) In here, the corresponding distances and the angles have been preserved. So, <u>this is an isometry.</u>

6 0
3 years ago
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