Question

Aflati x din proportiile:

x supra 5 egal 10 supra 25

2x supra 7 egal 4 supra 28

3 supra x egal 9 supra 12

4 supra 16 egal 8 supra x

5 supra 30 egal x supra 6

Repede, va rog!​

Answer 1

Răspuns:

Ai mai jos rezolvarea pentru fiecare subpunct

Explicație pas cu pas:

Salutare!

$\bf \dfrac{x}{5} = \dfrac{10}{25}\implies 25\cdot x = 5\cdot 10\implies 25x=50\:\Big|:25\implies \boxed{\bf x = 2}$

$\bf \dfrac{2x}{7} = \dfrac{4}{28}\implies 28\cdot 2x =4\cdot 7\implies 56x=28\:\Big|:56\implies \boxed{\bf x = \dfrac{1}{2}}$

$\bf \dfrac{3}{x} = \dfrac{9}{12}\implies 9\cdot x =3\cdot 12\implies 9x=36\:\Big|:9\implies \boxed{\bf x = 4}$

$\bf \dfrac{4}{16} = \dfrac{8}{x}\implies 4\cdot x =8\cdot16\implies 4x=128\:\Big|:4\implies \boxed{\bf x = 32}$

$\bf \dfrac{5}{30} = \dfrac{x}{6}\implies x\cdot 30 =5\cdot6 \implies 30x=30\:\Big|:30\implies \boxed{\bf x = 1}$

==pav38==