U_____________W________________V
UV=13
UW=2y-9
WV=y-5
UV=UW+WV
UV=(2y-9)+(y-5)=2y-9+y-5=3y-14
13=3y-14
27=3y
y=27/3=9
Solution is A, y=9
1:50 000 because 1/100 is only one of a hundred 1:50 is one and a half of one hundred
<span>plates slip or grind in the pass each other</span>
