Answer:
No solution
Step-by-step explanation:
multiplying both sides by 2 gives |x|=-6 but an absolute value can't be negative so there are no solutions
see more at: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-negative-number-topic/cc-6th-absolute-value/a/intro-to-absolute-value
Answer:
8
Step-by-step explanation:
50 is at rank 8.5, but since its a 53% chance. it would be below the .5 area and round to 8
Answer:
y =
Step-by-step explanation:
ax + yb = c ( subtract ax from both sides )
yb = c - ax ( isolate y by dividing both sides by b )
y =
Answer:
We need a sample size of at least 657.
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 zscore that has a pvalue of .
The margin of error is given by:
45 percent of its claims have errors.
So
99% confidence level
So , z is the value of Z that has a pvalue of , so .
What sample size is needed if they wish to be within 5 percent of the actual
This is a sample size of at least n, in which n is found when M = 0.05.
We need a sample size of at least 657.
Answer:
18a+2b
Step-by-step explanation: