Question

Pilne! błagam potrzebuje na dzisiaj : )

4.9 E,F

4.10 D

4.11 B

podrecznik matematyka prosto do matury wyd. nowa era

Answer 1

4.9

e)= 5/8+3/2*(19/4*1/19)+3 3/4*6/5-1/2=

5/8*1/4+15/4*6/5-1/2= 

5/32+9/2-1/2=5/32+2=2 5/32

 

f)=(3/2+8/3)*6/5-(10/3-5/4)*12/25=

(9/6-16/6)*/5-(40/15-15/12)*12/25=

-7/6*/6/5-25/12*12/25=-7/5-1=-2 2/5

 

4,10

d) =[(2/10+13/10)*2/3-(18,75-4,95)*10/23]/[6/5*10/6-12/5*125/100]=

=[15/10*2/3-13,8*10/23]/[2-3]=

 =[1-138/10*10/23]*(-1)=(1-138/23)*(-1)=(1-6)*(-1)=-5*(-1)=5

 

4.11

b) =[(20/2-5/2)*10/15-1,75*25/7]/[2,25*0,25]=

=[15/2*10/15-175/100*25/7]/[9/4*1/4]=

=[5-175/28]/[9/16]=

=1,25*16/9=5/4*16/9=20/9=2 2/9