9) Alberto measures the length of a piece of wire to be 105 cm. The actual length of the wire was 120 cm. What was the percent error of Alberto's measurement? ​

c

-by-step explanation:

it would be c

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.