Question

vă rog frumos sa faceti si mie ex 19-22 ok si dau coriana acuma îmi trebuie mâine dau coroana imediat

Answer 1

19. a) 9/11 se amplifica cu 4 =36/44=6²/44
      b) 5/4 se amplifica cu 4 = 20/16=20/4²
20. (1000a+100b+30+350a+35b)/15=
      (1350a+135b+30)/15=
       15(90a+9b+2)/15=
       90a+9b+2=
       9(10a+b)+2=
       9×ab(barat)+2 
       raspuns corect a)
21. ab/cd *10101=(10a+b)*10101/(10c+d)*10101=(101010a+10101b)/(101010c+10101d)=(100000a+10000b+1000a+100b+10a+b)/(100000c+10000d+1000c+100d+c)=ababab/cdcdcd ⇒ raspuns corect d)
22. 1x2x3x4x.....x100/2(1x2x3x4x....x100)=1/2
raspuns corect a)