James can lay a slab of concrete in 20 hours, while Francisco can do it in 16 hours. If James and Francisco work together, how long will it take?

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

Given: ae ≅ ce ; de ≅ be prove: abcd is a parallelogram. we have that ab || dc. by a similar argument used to prove that △aeb ≅ △ced, we can show that △ ≅ △ceb by. so, ∠cad ≅ ∠ by cpctc. therefore, ad || bc by the converse of the theorem. since both pair of opposite sides are parallel, quadrilateral abcd is a parallelogram.

When rolling 26 sided number cube what are the chances some of the role will be seven