Answer:
14
Step-by-step explanation:
Answer:
Step-by-step explanation:
hello :
2x+7y=1
...(*)
y=4x−8...(**)
(4;8) means x= 4 and y= 8
put this values in (*) and(**) :
2(4)+7(8) =1 62=1 false
8=4(4)-8 8=8 true
so :(4;8) is not solution for this system.
Answer:
The lower bound for a 90% confidence interval is 0.2033
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 
.
For this problem, we have that:
90% confidence level
So 
, z is the value of Z that has a pvalue of 
, so 
.
The lower limit of this interval is:
The lower bound for a 90% confidence interval is 0.2033
Answer:
Save $1.50
Step-by-step explanation:
1. Find the sale unit price by dividing the total price by the amount (1.00/5 = 0.20)
2. multiply .30 by 15 = 4.50 (original price)
3. multiply .20 by 15= 3.00 (sale price)
4. subtract the sale price from the original price (4.50-3.00=1.50)
Answer:
The slope is 5
Step-by-step explanation:
