K = n^2 + 9n + 1 Mo says,
“k will be a prime number for all integer values of n from 1 to 9”
Show that Mo is wrong.
You must show that your value of k is not prime.

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

In an isosceles triangle, the vertex angle is 112 degrees. what is the measure of each base. a.34 b.24 c.44 d.54

Finally, the arena decides to offer advertising space on the jerseys of the arena's own amateur volley ball team. the arena wants the probability of being shortlisted to be 0.14 what is this as a percentage? what is this as a fraction? what is the probability of not being shortlisted? give your answer as a decimal.