Abirthday party host planned for 20 people, but 17 actually attended. what is the percent error?

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?

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.

Which shows the first equation written in slope-intercept form? 1/2 (2y + 10) = 7x