Answer:
im thinking a. goodluck!
Step-by-step explanation:
Answer:
x = -1/3 and x = 4 choose 4
Step-by-step explanation:
3x2 + 11x – 4= 0
...
3xx - 12x + x - 4 = 0
3x(x -4) + x - 4 = 0
(x-4)(3x + 1) = 0
We have that the logarithmic function has a domain from 0 (without including 0) to plus infinity. That is because of the property that e=2.71 raised to any power is positive. We also have that the square root function is defined only from 0 to plus infinity, since every square of a number is positve or 0. The answer is that the domains differ; they are almost equal, except for the fact that the domain of the square root function additionally contains 0.
In this question we simple wish to calculate the standard error and margin of error from the population. This can be done purely using the standard deviation and sample size.
Standard error
= std dev / (SQRT) n
= 11.5 / SQRT of 70
= 11.5 / 8.366
= 1.374
Margin of error is the standard error multiplied by a Z value that correspondence to a confidence percentage. At a 95% confidence the Z value is 1.96. Therefore
MOE = 1.96 x 1.374 = 2.69