Question

calculati media aritmetica a numerelor 17; 28 si 45
suma a patru numere naturale consecutive este 90 aflati numerele
descompuneti in factori primi numerele 72, 45
urgent pls pls

Answer 1

(17+28+45):3=90:3=30

x+x+1+x+2+x+3=90
4x+10=90.
4x=80. x+1=21
x=20 x+2=22
x+3=23
72=2^3•3^2
45=5•3^2