Answer:
the first one :)
Step-by-step explanation
If the number of negatives is an even number it would make it positive and if it is an odd number it would make it negative.
We are asked to determine the opening of the graph of the given equation y² + 16y - 4x + 4= 0. To answer this problem, we need to transform the equation into the standard form where all variable y and variable x are in opposite side such as shown below:
y² + 16y - 4x + 4 = 0
y² + 16y = 4x - 4
y² + 16y + 64 = 4x - 4 +64
(y + 8)² = 4x + 60
Then, the graph opens to the right.
Answer: 
Step-by-step explanation:
First you need know some general formuals of factorization such as
so you have 
And, 
so you have 
If you use them, then you can modify your equations such as
÷ 
= 
÷ 
= 
Answer:
13 and 25
Step-by-step explanation:
um so dont hold me to this, but if he's twelve years older than susan she would've been twelve and he would've been 24 last year.
Let us say that:
K = age of Kristen
B = age of Ben
From the problem, we make the equations:
eqtn 1: K + B = 32
eqtn 2: (K – 4) = 2 (B – 4)
Simplifying eqtn 2:
K – 4 = 2 B – 8
K = 2 B – 4
Plugging in this to eqtn 2:
(2 B – 4) + B = 32
3 B – 4 = 32
3 B = 36
B = 12
From eqtn 2:
K = 2 B – 4 = 2 (12) – 4 = 20
So Kristen is 20 while Ben is 12.
