Answer:
I belive the answer is 20 songs.
Step-by-step explanation:
The equation you're looking for to solve this is
0.30x+5=0.20x+7
Then, you would solve for x in order to get 20.
1.8y+9
I used the distributive property to multiply into the parenthesis. If you are looking for the answer: 5
Hope this helps (^-^)
Concept & Calculation of Range .
11 , 13 , 14 , 14 , 15, 17 , 19 , 20
Even numbers greater than 11 = 14 , 14 , 20
Range = Highest Value - Lowest Value = 20 - 14 = 6
Entire data range = 20 - 11 = 9
Range of all numbers greater than 11 (ie 13 , 14 , 14 , 15, 17 , 19 , 20) = 20 - 13 = 7
x= 3.47 or x= -4.47 , y= 0.53 or y= 8.47
quadratic equation:
x^2 + y^2 = 16
(-b± √b^2 - 4*a*c) /2
(-1 ± √ 1-4*1*16)/2
(-1 ± 3√7)/2
(-1 ± 7.94)/2
(-1 + 7.94 )/2 or (-1-7.94)/2
x= 3.47 or -4.47
therefore:
x+y = 4
3.47 + y = 4 or -4.47 + y = 4
y = 4-3.47 or y = 4+ 4.47
y= 0.53 or y = 8.47
x(x+5)^2
x^3+ 10x^2+25x
factor out an x
x(x^2+10x+25)
what numbers multiply to 25 and add to 10
x(x+5) (x+5)
