Beethoven wrote 9 trios. these trios make up 20% of music pieces he wrote. how many pieces of music did he write?

He would have written 45 pieces

As 20% is 1/5 of a 100%, so 9x5=45

529 and 531

step-by-step explanation:

dilation scale factor 2: starting with δabc, draw the dilation image of the triangle with a center at the origin and a scale factor of two. notice that every coordinate of the original triangle has been multiplied by the scale factor (x2). dilation with scale factor 2, multiply by 2.