2 years ago

Evaluate the limit as h goes to 0 of (3+h)^4 -81/h

Mathematics

1 answer:

Montano1993 [528]2 years ago

8 0

Answer:6

Step-by-step explanation:Take the derivative of the numerator and denominator, then evaluate the limit.

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At a school, there are 120 athletes. The ratio of boy athletes to girl athletes is 3:5. How many of the athletes are girls?

FinnZ [79.3K]

There are 75 girls because you add the ratio 3+5 = 8 then divide 120 by 8 to get 15 then there are 5 lots of girls so multiply 15 x 5 to get 75

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3 years ago

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2 years ago

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.