13x+25=0
13x+25-25=0-25 Since two opposites added give zero, remove them from the expression 13x=-25
Answer: $51
60 * .15 = 9
60 - 9 = $51
He went upstream 3 hours and downstream two. 4x3=12 6x2=12
He went 24 miles.
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
