Question

Dana a obtinut la primele 4 teste 75 de puncte La fiecare test si-a dublat punctele obtinute la test-ul anterior cate puncte a obtinut la fiecare test​

Answer 1

Răspuns:

T1+T2+T3+T4=75 pct

T1 |-|

T2 |-|-| 75 pct

T3 |-|-|-|-|

T4 |-|-|-|-|-|-|-|-| k= 1× |-|

15k=75 pct

k=75÷15

k=5

T1= 5pct

T2= 10pct

T3=20pct

T4=40 pct

40+20+10+5=60+10+5=75 pct

Answer 2

a |-|
2a |-|-|
4a |-|-|-|-|
8a |-|-|-|-|-|-|-|-|

15a=75
a=75:15
a=5=>2a=5x2=10
4a=5x4=20
8a=5x8=40

V: 5+10+20+40=75

BAFTĂ :)))))