Burl and paul paint signs together on a scaffold. compared to their weights plus the weight of the scaffold, the sum of tensions in the supporting ropes is?

  equal

Step-by-step explanation:

If the scaffold is not accelerating either upward or downward, the sum of upward support forces is the same as the sum of downward weights being supported.

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.

c. side angle side. u shares the same sides