Answer:
the answer is 13
Step-by-step explanation:
Answer:
Step-by-step explanation:
Recall that when we are factoring a polynomial, we are implicitly finding its roots. By finding a root, we are looking for a value of x (say c) such that p(c) =0. When this happens, our polynomial has the the polynomial (x-c) as a factor.
We are given the values of p at some values of x. We notice that p(5) = 0 and p(-12) =0. So, this means that our polynomial has as a factor the polynomials (x-5) and (x+12).
Answer: I.Q. of 130 will have a z score (or standard score) of 2.
Step-by-step explanation:
Let X be a random variable that represents the I.Q. score.
Formula for Z-score : 
As per given, mean I.Q. = 100 and the standard deviation =15
For X = 130,
So, I.Q. of 130 will have a z score (or standard score) of 2.
Answer:
see below
Step-by-step explanation:
3x+9 = 15
Subtract 9 from each side
3x+9-9=15-9
3x = 6
Divide by 3
3x/3 = 6/3
x=2
Check
3*2+9 = 15
6+9 =15
15=15
