Is there a proportion between these two ratios? Ratio 1-4 amateurs: 20 professionals
Ratio 2-3 amateurs: 15 professionals

Part b: Find the ratio of the number of professionals in ratio 1 the number of professionals in ratio 2.
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How many different three-digit numbers can be formed using the digits 1 comma 2 comma 9 comma 6 comma 4 comma 3 comma and 8 without repetition? for example, 664 is not allowed.

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.

Determine domain and range, largest open interval, and intervals which function is continuous.