If n is rational, it means that

Therefore when we do n² we can write it as

Remember that the product of two integer numbers is also an integer, therefore we can guarantee that

Then we can confirm that n² is the quotient of two integers and the denominator is not zero, therefore, n² is always rational, it cannot be an irrational number
We want to calculate the line that passes through the points (-7,0) and (-3,-9). Recall that the equation of a line is

where m is the slope and b is the y intercept. We can calculate first the slope and then find the value of b. To do so, recall that given points (a,b) and (c,d) the slope of the line that passes through them is given by the formula

so by taking a=-7, b=0, c=-3 and d=-9 we get

so our equation becomes

so know we want this line to pass through the point (-7,0), so whenever x= -7 then y=0 so we have the equation

or equivalently

so if we subtract 63/4 on both sides, we get

so our equation would be
Answer:
where is the cylinder
Step-by-step explanation:
Answer: hello your question is poorly written below is the complete question
Find the angle between and if ⋅=3√2‖‖⋅‖‖.
(Use symbolic notation and fractions where needed. Give your answer in terms of . )
answer :
∅ = π / 6
Step-by-step explanation:
V .W = 
Hence
∅ = cos^-1 ( 
∅ = cos^-1 (
)
∴ ∅ = π / 6
Answer:
Mean = 910.2
Standard deviation = 12.8
Step-by-step explanation:
82% over the age of 25 are high school graduates.
A survey randomly selected students of certain country included 1110 who were over the age of 25 and 871 of them were high school.
n = 1110
p = 82% = 0.82
q = 1 - 0. 82
q = 0.18
Mean = np
= 1110*0.82
= 910.2
Standard deviation = √npq
= √ 1110*0.82*0.18
=√163.836
= 12.8