Answer:
50
Step-by-step explanation:
30% * n = 15
Change to decimal form
.30 *n = 15
Divide each side by .30
.30n/.30 = 15/.30
n =50
The number is 50
 
        
             
        
        
        
Let's factor the top and the bottom. 
Top factors 4x + 20 = 4(x + 5)
Bottom x^2 + 2x - 15 = (x + 5)(x - 3)
The gcf is the largest value that will go into both the top and the bottom.  In our problem the ONLY thing that will go into top and bottom is x + 5 so that is your GCF. (c)
        
             
        
        
        
Answer:
4
x
−
5
+
y
=
0
x
−
y
+
4
=
8
x
+
6
y
=
5
Step-by-step explanation:
 
        
             
        
        
        
Answer:
 ⟨-5, -1⟩
Step-by-step explanation:
Vector:
A vector is given by its endpoint subtracted by its initial point.
Vector u has initial point at (3, 9) and terminal point at (–7, 5)
Then

Vector v has initial point at (1, –4) and terminal point at (6, –1).
Then

What is u + v in component form?

 ⟨-5, -1⟩ is the answer.
 
        
             
        
        
        
Answer:
y = 3x + 13 
Step-by-step explanation:
Here, we want to solve for y
To solve for y, we simply are going to make y the subject of the formula 
We have this as;
y - 3x = 13
y = 13 + 3x