Answer:
16) 
17) y = -x - 4
18) y = -2x - 1
19) y = -2x
20)
Step-by-step explanation:
With the two points you find the slope using 
Then using that slope, plug the slope in with one of the points values of x and y into the point slope formula, and smiplify that into the y-intercept formula.
We need to find out how many adults must the brand manager survey in order to be 90% confident that his estimate is within five percentage points of the true population percentage.
From the given data we know that our confidence level is 90%. From Standard Normal Table we know that the critical level at 90% confidence level is 1.645. In other words,
.
We also know that E=5% or E=0.05
Also, since,
is not given, we will assume that
=0.5. This is because, the formula that we use will have
in the expression and that will be maximum only when
=0.5. (For any other value of
, we will get a value less than 0.25. For example if,
is 0.4, then
and thus,
.).
We will now use the formula

We will now substitute all the data that we have and we will get



which can approximated to n=271.
So, the brand manager needs a sample size of 271
Answer: 3.374
You subtract 5.316 from 1.942 and get 3.374
Hope this helps :)
Answer:
volume = 10,082.5 in³
Step-by-step explanation:
radius = 26/2 = 13
volume = πr²L = (3.14)(13²)(19) = 10,082.54 in³
Answer:
A line includes the points (4, 8) and (3, 5) whose equation in slope-intercept form will be :

Step-by-step explanation:
The point slope form: 

where : m = Slope of the line

A line includes the points (4, 8) and (3, 5).The equation of the line will be:




(y=mx+c), where c is intercept at y axis.
The above equation represents slope-intercept form of the line.