ANSWER CORRECTLY FOR BRAINLIEST!!! ONLY: 8. 9. 10. 11.

Mathematics

2 answers:

tamaranim1 [39]2 years ago

7 0

Answer:

8. -1

6-9=-3

-3/3=-1

Licemer1 [7]2 years ago

4 0

8/ 9 + 3X = 6 => X = -1
The number is -1

9/ 9(x-1) - 4(7-x) <= 10x - (2x + 1) - 6
=> 9x - 9 - 28 + 4x <= 10x - 2x - 1 - 6
=> 13x - 37 <= 8x - 7
=> 5x <= 30
=> x <= 30/5
=> x <= 6

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3 years ago

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a_sh-v [17]

Answer:

The answer is explained below

Step-by-step explanation:

Given that:

mean (μ) = 7 and standard deviation (σ) = 1.5.

The z score is used in statistic used to measure the number of standard deviation by which the raw score is above or below the mean value. It is given by:

$z=\frac{x-\mu}{\sigma}, where\ x\ is\ the \ raw\ score$