Answer:
-1 and -3
(n+7)(n-8)
Step-by-step explanation:
1. Find the Zeros



2. Factoring Trinomials



Answer:


Step-by-step explanation:
The given system is:
4x-3y=8
5x-2y=-11
We make x the subject in the top equation to get:

Plug this expression for x in the bottom equation to get

We expand to obtain

Multiply through by 4

Group similar terms



This means


Answer:
\mu = 14.5\\
\sigma = 5.071\\
k = 1.084
Step-by-step explanation:
given that a statistician uses Chebyshev's Theorem to estimate that at least 15 % of a population lies between the values 9 and 20.
i.e. his findings with respect to probability are

Recall Chebyshev's inequality that

Comparing with the Ii equation which is appropriate here we find that

Next what we find is

Thus from the given information we find that

Answer:
8x12x30=2880
Step-by-step explanation:
Supplementary angles
x+20+5x+10=180
6x+30=180
6x=150
x=25