Bonjour pouvez vous m aider svp merci Dans chacun des cas suivants, préciser si la suite (un) est définie de manière explicite ou par récurrence puis cal-
culer un
1. U o =5 et U n+1=2:Un
2. Un= 4x3n – 1

Which choice represents the sample space ,s for this event

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?

How is working backward similar to solving an equation?