Question

Aflaţi pe x, ştiind că:
a) x•(1+2+3+...+100) = 60 600;
b) (1+2+3+...+100):x= 101
AM NEVOIE URGENT!!!
dau coroana

Answer 1

$a)\:\:x( \tfrac{100 \times 101}{2} ) = 60600 \\ x \times 5050 = 60600 \\ x = 12 \\ \\ \\ b)\:\:( \tfrac{100 \times 101}{2} ) \div x = 101 \\ 5050 \div x = 101 \\ x = 50$

Answer 2

Răspuns:

A) (1+100)x100:2

101x100:2

10100:2

5050

60600:5050

X=12

B) (1+100)x100:2

101x100:2

10100:2

5050: x=101

X=5050:101

X=50

Sper ca te-am ajutat! Succes!