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riadik2000 [5.3K]
3 years ago
9

(x +8)(x + 11) = 0 Pls help I’m dumb and don’t know this ...

Mathematics
2 answers:
ch4aika [34]3 years ago
6 0

Answer:

-8, -11

Step-by-step explanation:

Go to the M-a-t-h-w-a-y website

Ivanshal [37]3 years ago
5 0

Answer:

Step-by-step explanation:

x= -8,-11

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Check the explanation

Step-by-step explanation:

Following table shows the calculations:

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46.8                 45.41                2190.24         2062.0681        2125.188

47.93                15.7                 2297.2849      246.49            752.501

51.78                49.58              2681.1684      2458.1764        2567.2524

52.17                44.34              2721.7089      1966.0356        2313.2178

47.36                18                   2242.9696            324               852.48

Total 292       211.79               14245.6934      8559.1077      10392.0488

Sample size: n =6

Now

S_{yy}=\sum y^{2}-\frac{\left (\sum y \right )^{2}}{n}=1083.27

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r=\frac{S_{xy}}{\sqrt{S_{xx}S_{yy}}}=0.436

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