Question

Calculati media geometrica a urmatoarelor numere rationale:a)10/3si 15/2;b)14/5 si 35/2;c)20/3 si 12/5;d)15/7 si 21/5

Answer 1

Răspuns:

Explicație pas cu pas:

a)mg²=axb

10/3×15/2=5²⇒mg=5

b) 14/5×35/2=7×7   ⇒mg=7

c)20/3×12/5=4×4    ⇒mg=4

d)15/7×21/5=3×3    ⇒mg=3

Answer 2

$m_g=\sqrt{a*b} \\\\m_g=\sqrt{\frac{10}{3}*\frac{15}{2} } =\sqrt{5*5 } =\sqrt{25} =5\\m_g=\sqrt{\frac{14}{5} *\frac{35}{2} } =\sqrt{7*7} =7\\m_g=\sqrt{\frac{20}{3}*\frac{12}{5} } =\sqrt{4*4} =4\\m_g=\sqrt{\frac{15}{7} *\frac{21}{5} } =\sqrt{3*3} =3$