myparentsrock17
03.11.2019 •
Mathematics
A$70 dollar jacket is on sale for 25%. what is the new price?
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Ответ:
70*0.25 = 17.50
Subtract 17.50 from 70
70-17.50 = $52.50
Ответ:
Step-by-step explanation:
Use triangle congruency:
BC=EC, AC=DC - Given
m∠DCE = m∠ACB because they are vertical angles
Therefore ΔABC ≅ ΔDEC because of Side-Angle-Side congruency
AB=DE because corresponding parts of congruent triangles are also congruent (CPCTC)