0,3,6,9,12,15,18,21,24,27,30,33,36
0,12,24,36
        
             
        
        
        
Answer:
Infinite
Step-by-step explanation:
3x+15=2x+10+x+5 
grouping
3x+15=3x+15
If you have a equation where both sides are the exactly the same, the solutions are infinite. This is written as: x€ℝ
 
        
             
        
        
        
24 h in 1 day
just divide the hours by 24
168 : 24 = 7
 
        
             
        
        
        
Answer:
The average of -2.5, 5.2, 1.7, and -0.8 is <u>0.9</u>
Step-by-step explanation:
You are taking the mean of all the values
So you would add -2.5, 5.2, 1.7, and -0.8 all together
This gives you 3.6
Then you would divide by the number of numbers per se, 
Which would give you the answer: 0.9
 
        
                    
             
        
        
        
Answer:
x=4.63
Step-by-step explanation:
Area = (1/2) (base) (height)
20 = (1/2) (x+4) (x)
40 = x²+4x
x²+4x-40=0
Put in quadratic equation:
x=
x=
x=4.63324958071 or x=-8.63324958071
Since x can't be negative in this case we take our answer to be 4.63324958071, which rounds to 4.63