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forsale [732]
3 years ago
8

Ipotenuza un triunghi dreptunghi isoscel este de 20 dm .Calculați aria

Mathematics
1 answer:
zlopas [31]3 years ago
7 0
A way of finding area of an isosceles triangle is by using the formula A=1/2bh, plug in the base and height, and solve from there.<span />
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A researcher computes r = 0.45 using a sample of 18 participants. Is this Pearson correlation coefficient significant for a two-
Eduardwww [97]

Answer with explanation:

Given : The computed r -value = 0.45

Sample size : n=18

Degree of freedom : df=n-2=18-2=16

Now, the critical value for Pearson correlation coefficient  for a two-tailed test at a .05 level of significance will be :

r_c=0.468   ( by critical correlation coefficient table)

Since , r>r_c i.e. 0.45>0.468 , then we say that his Pearson correlation coefficient is not significant for a two-tailed test at a .05 level of significance.

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What is the slope of this line?
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448 is the answer to 16y2 – 64.

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