Question

don't answer if you don't know​

Answer 1

Answer:

$(1) : ( {3}^{10} \div {3}^{7} ) \times {3}^{ - 5} \\ = {3}^{10 - 7} \times {3}^{ - 5} \\ = {3}^{3} \times {3}^{ - 5} \\ = {3}^{3 + (- 5)} \\ = {3}^{ - 2} \\ = \frac{1}{ {3}^{2} } \\ = \frac{1}{9} \\ \\ (2): \frac{ {2}^{3} }{ {2}^{5} } \times \frac{ {3}^{5} }{ {3}^{3} } \\ \\ = {2}^{3 - 5} \times {3}^{5 - 3} \\ = {2}^{ - 2} \times {3}^{2} \\ \\ (3) : {5}^{ m } \div {5}^{ - 3} = {5}^{5} \\ {5}^{m - ( - 3)} = {5}^{5} \\ {5}^{m + 3} = {5}^{5} \\ \blue{\mathfrak{\underline{\large{On \: comparing}}}:} \\ m + 3 = 5 \\ \boxed{m = 2} \\ \\ (4) :0.000000120 \\ = 1.2 \times {10}^{ - 7} \\ \\\red{\mathfrak{ \large{\underline{{Hope \: It \: Helps \: You}}}}} \\ \blue{\mathfrak{ \large{\underline{{Mark \: Me \: Brainliest}}}}}$

Answer 2

hopefully its helped u dear :)