Question

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Answer 1

Răspuns:

10 *x= 122 =>  x= 122:10= 12,2 dm

y= 0,45x4= 1,8 dm

h= $\frac{15x}{7}$ + $\frac{15y}{7}$= $\frac{15*12,2 + 15* 1,8}{7}$ = $\frac{183+27}{7}$= 210: 7= 30 dm

h= 30 dm