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shtirl [24]
3 years ago
15

Can someone help me with this. Will Mark brainliest. Need answer and explanation/work. Thank you.

Mathematics
1 answer:
Bas_tet [7]3 years ago
8 0
Perpendicular line: y = 2x+4
parallel line: y = -2x+3 (or any number different from 4)
neither: y= -4x+-3
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The claim is that the standard deviation of the speeds of drivers in Bradford is 8 mph. An experienced driver feels that this is
Irina-Kira [14]

Answer:

Null hypothesis is rejected. Standard deviation is > 8 miles per hour

Step-by-step explanation:

σ [Population standard deviation] = 8 , s [sample standard deviation] = s

n [no of items] = 8

H0 [Null] : σ = 8 ; H1 [Alternate - Right Tail] : σ > 8

χ2 = (n - 1) . s^2 / σ^2

= 49 x (10.5)^2 / 82 = 5402.25 / 64

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p = 0.0013

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6 0
3 years ago
Sixth grade
garri49 [273]

Answer:

11-C

Step-by-step explanation:

Cause 11-C

equels the same amount as the one on the top of 11-C

6 0
2 years ago
Hannah,her dad,and her grandmother each ate 2/8. How much pizza did they eat altogether?
Vinil7 [7]

Answer:

6/8

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Add the tops. Hope this helps :)

7 0
3 years ago
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|2x-5|=9 please awnser i need this for math
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Answer:

7

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2x = 14

divide by 2

8 0
2 years ago
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