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vekshin1
4 years ago
8

Find the variance of the given data rounded to the nearest hundredth 3,4,5,7,10,12,15

Mathematics
1 answer:
True [87]4 years ago
4 0

Answer:

(3 + 4 + 5 + 7 + 10 + 12 + 15)/7 = 8

(3^2 + 4^2 + 5^2 + 7^2 + 10^2 + 12^2 + 15^2)/7 - 8^2 = 17.14285714


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16. Find the values of x and y.<br> (2y + 5)<br> (5r - 17)<br> (3r - 11)
Alinara [238K]
(5x - 17) + (3x - 11)= 180 [ Linear Pair ]
= 8x - 28= 180
= 8x= 208
= x = 208/8
= x = 26

3x-11
= 3*26 - 11
=67

Now, we have:
(2y+5)+90+(3x-11)=180 [Linear Pair]

Substituting (3x-11),
(2y+5) + 90 + 67= 180
= (2y+5)+157= 180
= 2y + 162= 180
= 2y= 18
=y = 18/2
=y= 9

Therefore, x= 26, and y= 9

Please hit the ‘Thanks’ if this helped

Have a great day.
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Step-by-step explanation:

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