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2 years ago

Whats the median of (20, 15, 14, 16, 17, 12, 20, 22)

Mathematics

1 answer:

Tatiana [17]2 years ago

5 0

Answer:

16.5

Step-by-step explanation:

Given data to us is ,

20, 15, 14, 16, 17, 12, 20, 22 .

Arrange it in ascending order .

= 12 , 14 , 15 , 16 , 17 , 20 , 20 , 22

The middle most observation will be median in case n is odd and average of middlemost observations if n is even , that is n = 8 .

=> Middlemost observations = 16 , 17

=> Mean = 16 + 17 /2 = 33/2 = 16.5

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Given that x:2=7:5 Calculate the value of x

Nataliya [291]

Answer:

x=2.8≈3

Step-by-step explanation:

x:2=7:5

$\frac{x}{2}=\frac{7}{5}$

by cross-multiplication

x×5=2×7

5x=14

x=14/5

x=2.8≈3

i hope this will help you :)

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3 years ago

The base of a ladder is 2.8m placed away from a tree that is 4.5m tall. The end of the ladder touches the top of the tree. Calcu

horrorfan [7]

Step-by-step explanation:

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2 years ago

What is the sum of 4.9 × 102 and 6.8 × 103? 1.17 × 103

Tju [1.3M]

4.9 * 102 = 499.8
6.8 * 103 = 700.4
1.71 * 103 = 120.51

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3 years ago

Read 2 more answers

Consider a triangle ABC like the one below. Suppose that a =53, b=18, and A=130º. (The figure is not drawn to scale.) Solve the

ddd [48]

Answer:

B = 15.1°, C = 34.9°, c = 39.6

Step-by-step explanation:

law of sines

53/sin 130 = 18/sin B

sin B = .26; B = 15.1°

C = 180 - 15.1 - 130 = 34.9°

c/sin 34.9 = 53/sin 130

c = 39.6

8 0

3 years ago

Find the equation of the line containing the points (20,-7) and (10,-2). Type your answer in this order and don't use spaces or

aliina [53]

$(\stackrel{x_1}{20}~,~\stackrel{y_1}{-7})\qquad (\stackrel{x_2}{10}~,~\stackrel{y_2}{-2}) \\\\\\ \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{-2}-\stackrel{y1}{(-7)}}}{\underset{run} {\underset{x_2}{10}-\underset{x_1}{20}}}\implies \cfrac{-2+7}{-10}\implies -\cfrac{1}{2}$

$\begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{(-7)}=\stackrel{m}{-\cfrac{1}{2}}(x-\stackrel{x_1}{20}) \\\\\\ y+7=-\cfrac{1}{2}x+10\implies y=-\cfrac{1}{2}x+3$

4 0

2 years ago