7. Danielle went to the grocery store to buy pies for a family dinner. The manager told her they were having a sale in which she could get the third pie for half price if she bought the first two for full price. Is the relationship between the number of pies and the cost proportional? Justify your answer.

Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.

Determine if the equation defines y as a function of x: 2xy = 1. yes o no

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.