The ratio of pop songs to rock songs you download is 5:4, and 40 are pop songs. You want to find out how many rock songs there are.
First, add the ratios together: 5+4=9. This means that 9 will be your denominator, so 5/9 songs are pop and 4/9 songs are rock.
Now you know that pop songs account for 5/9 of the songs, this means that 40 is 5/9 of the total songs.
To find out how much 4/9 is, you need to divide 40 by 5 to get 1/9 and times that number by 4 to get 4/9:
40÷5=8×4=32 songs are rock songs
Parallelogram area = base * height
240 = base * 20
base = 240 / 20
base = 12 cm
Answer:
The answer is C, the coefficient.
x^2 - 3x + 9 - 5x + 10 = 0
x^2 - 8x + 19 = 0
