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liberstina [14]
3 years ago
11

Solve using substitution y=x-5 5x-9y=17

Mathematics
1 answer:
aniked [119]3 years ago
7 0

Answer:

12

Step-by-step explanation:

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In B E C, F is the centroid, and AC = 12. Find A F and F C
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bearing in mind that the centroid in a triangle cuts each of the three medians in a 2:1 ratio.

since we know that A C = 12, let's split it in a 2:1 ratio then, cleary from the picture the larger is F C, so F C : A F is on a 2:1 ratio.

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"Adjacent" means next to each other. "Perpendicular" means at an angle of 90 degrees. 
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2.98x4 
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The meaning of significance. Asked to explain the meaning of "statistically significant at the α=0.05 level," a student says: "T
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Answer:

This explanation is not correct

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Significance level is the probability that the null hypothesis rejected is in fact true. If we say there is a significance level of 0.10 or 10%(α=0.10 level) then there is a 10% chance of incorrectly rejecting the null hypothesis when there is actually no difference.

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