5. a clinic wishes to look at two different
treatments for headaches, meditation and pain
relievers (specifically acetaminophen). a simple
random sample of 32 headache sufferers were
taught meditation techniques to treat their pain.
this group reported an average of 4.83
headache-free days with a standard deviation of
1.65 days. a different random sample of 35
headache sufferers was given acetaminophen to
treat their pain and reported an average of 5.02
headache-free days with a standard deviation of
2.18 days. find the 98% confidence interval for
the mean difference in headache-free days
between the two populations of headache
sufferers.

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

step-by-step explanation:

i’m here for points.

twenty-six miles over two gallons because the proportion for the original 13 miles to one gallon would be written 13/1 and, doing the same thing to the top and bottom, i multiplied by 2 and got 26/2