Answer:
general equation of line is y=mx+b, where m is the slope and b is y-intercept and (x,y) is any point on the line.
Step-by-step explanation:
Answer: 58.11 cm³
Step-by-step explanation:
1. The volume can be calculated with the following formula:
Where <em>l</em> is the lenght, <em>w</em> is the width and <em>h</em> is the heigth of the smartphone.
2. You know that the dimensions are:
3. Convert the height and the width from inches to centimeters, as following:
4. Convert milimeters to centimeters:
4. Then, the volume is:
Answer
2.
Step-by-step explanation:
Answer:
X= 2, -5
Step-by-step explanation:
Take the root of both sides
Answer:
The sample size suggested by this statement is of at least 4145.
Step-by-step explanation:
This statement states that the 99% confidence interval has a margin of error of 2 percentage points.
In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of , we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of .
The margin of error is:
99% confidence level:
So , z is the value of Z that has a pvalue of , so .
Find the sample size suggested by this statement.
The sample size is at least n.
n is found when M = 0.02.
We don't know the true proportion, so we use , which is when the largest sample size will be needed.
Rounding up
The sample size suggested by this statement is of at least 4145.