Similar triangles so AC:BC=AE:DE
15+6=21 = AE
15:12.5=21:?
to get from 15 to 12.5 you divide by 15 and times by 12.5 so do this the to the other side
21/15=1.4
1.4 x 12.5=17.5
So DE=17.5
The explanation is in a file the other Pearson put
Answer:
56
Step-by-step explanation:
Answer:
so a fraction itll be a 4/5
Compare the values of the underlined digits
