Answer:
x = 29
y = 6
Step-by-step explanation:
Let the two numbers be represented as x and y
x + y = 35
x = 5y - 1
Substitute x as 5y -1 in equation one
5y -1 + y = 35
5y + y -1 = 35
Add 1 to both sides
6y - 1 + 1 = 35 + 1
6y = 36
Divide both sides by 6
6y/6= 36/6
y = 6
Now substitute y as 6 in any of the equations to get x.
Using equation one ,
We have
x + y = 35
x +6 = 35
Subtract 6 from both sides
x + 6 - 6 = 35 - 6
x = 29
Answer:
c. We are 90% confident that the mean systolic blood pressure for female students at the college is between 100.4 mmHg and 159.6 mmHg.
Step-by-step explanation:
x% confidence interval for the sample mean being between a and b.
Interpreation:
We are x% sure that the true population mean is between a and b.
The doctor collects systolic blood pressure measurements from random sample of 28 female students. The resulting 90% confidence interval is (100.4, 159.6).
So
We are 90% sure that the mean of all female students at the college is between these two values.
So the correct answer is:
c. We are 90% confident that the mean systolic blood pressure for female students at the college is between 100.4 mmHg and 159.6 mmHg.
Answer:
{-2, 4}
Step-by-step explanation:
|x - 1| = 3
There are two cases, one positive and one negative
x - 1 = 3 and x-1 = -3
Add 1 to each side
x-1+1 = 3+1 x-1+1 = -3+1
x =4 x = -2
The associative property states that you can add or multiply regardless
of how the numbers are grouped. By 'grouped' we mean 'how you use
parenthesis'. In other words, if you are adding or multiplying it does
not matter where you put the parenthesis. Add some parenthesis any where
you like!.