👤

Sagot :

ex:1
a=bc=-10*5=-50
(a-b)c=5*6+5*(-10)=30+(-50)=-20
a=b/c=-10/5=-2
(5a-b)/c=(5*6+10)/5=40/5=8

ex:3
1) 7,57
2) 7,570

ex:5
1) EC/AB=CD/BD
2,4/AB=3,2/7.2
AB=(7,2*2,4)/3.3=5,4

2)BD=BC+CD=4+3.2=7,2
BC/AD=EC/AB
AD=(4*5,4)/2,4=9

3) je ne sait pas

© 2024 IDNLearn. All rights reserved.