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Dominik [7]
2 years ago
6

I will give lots of points if you answer these few questions

Mathematics
2 answers:
charle [14.2K]2 years ago
8 0
Number 1. 20x+40
And number 3. Is 77-28x
docker41 [41]2 years ago
5 0

Answer:

1. 20x+40

2. 6f+6g

3. 77-28x

Step-by-step explanation:

<u>Use distributive property for all</u>

1) 10(2x+9)-50

20x+90-50

20x+40

2) 6(f+g)

6f+6g

3) 77-28x  

4) 3.2(5w+3)

16w + 9.6

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<span>Mean = 270 Standard deviation = 10 x = 255 Formula for z-score, z = (x - mean)/SD z = (255 - 270) / 10 => z = -15 / 10 => z = -1.5 So by referring to z-table, -1.5 correlates to 0.0668 that implies to 0.07 So 7% of the boxes of Apples weight less than 255oz. The percentage of boxes is in the range of 255 oz and 270 oz, Now calculating the requiring percentage 50% - 7% = 43%</span>
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