Answer:
(b) 4,445
Step-by-step explanation:
If the researcher would like to be 95% sure that the obtained sample proportion would be within 1.5% of p (the proportion in the entire population of U.S. adults), what sample size should be used?
Given a=0.05, |Z(0.025)|=1.96 (check standard normal table)
So n=(Z/E)^2*p*(1-p)
=(1.96/0.015)^2*0.5*0.5
=4268.444
Take n=4269
Answer:(b) 4,445
Step-by-step explanation:
Given:

This field will have a scalar potential
if it satisfies the condition
. While the first x- and y- components of
are satisfied, the z-component doesn't.


Therefore the field is nonconservative so it has no scalar potential. We can still calculate the work done by defining the position vector
as

and its differential is

The work done then is given by



Answer:
Rational
Step-by-step explanation:
This is rational because the square root of 169/64 would be 13/8 and any rational number could be put into a fraction
Answer:
The equation is y = (2/3)x + (4/3).
Step-by-step explanation:
First, you have to change the equation into slope-intecept formula to find its gradient (slope) :



Given that when a line is perpendicular to the other line, their slope value multiplied, will form -1. Next, we have to find the slope for line :




Lastly, we have to subatitute the x and y values into the equation, to find its intercept value :






Uhhh that doesn’t seem possible but then again i forgot simple math lol