Answer:
Part A, one solution
Part B, x=3
Step-by-step explanation:
divide both sides of the equation by 7 (5x-13=2)
move the constant to the right hand side and change its sign (5x=2+13)
add numbers (5x=15)
divide both sides of the equation by 5 (x=3)
hope this helps, have a good day
Answer:
x= -2
x= 2
Step-by-step explanation:
First, identify the problem.
l x+3 l = 5
Secondly, plug in the value for x.
l -2 + 3 l = 5
l -8 + 3 l = 5
etc.
Lastly, determine the answer.
x= -2
x= 2
Reminder: Anything within absolute value turns into a positive.
Answer:
The 99% confidence interval estimate of the proportion of people who say that they voted is (0.6623, 0.7369).
Step-by-step explanation:
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 z-score that has a p-value of .
In a survey of 1002 people, 701 said that they voted in a recent presidential election.
This means that
99% confidence level
So , z is the value of Z that has a p-value of , so .
The lower limit of this interval is:
The upper limit of this interval is:
The 99% confidence interval estimate of the proportion of people who say that they voted is (0.6623, 0.7369).
Answer:
7.13 x 10^-5
Step-by-step explanation:
The answer is D.9 , you just have to do an average wich is (12+6)÷2 and there you have it