Question

calcule mentalmente c)7^-2x49. D) 6^-2+35/36

Answer 1

c =1
d = 1
espero ter ajudado

Answer 2

Respostas:

→ C = 1

→ D = 1

Cálculos:

C)

$\large\text{\textsf{7^-^2 ~.~49}}\\\\\\\large\text{\textsf{ \sf{\dfrac{1}{7^2}} ~.~49}}\\\\\\\large\text{\textsf{ \sf{\dfrac{1}{49}} ~.~49}}\\\\\\\large\text{\textsf{ \sf{\dfrac{1}{49}} ~.~ \sf{\dfrac{49}{1}} }}\\\\\\\\\text{\textsf{ \sf{\dfrac{49}{49}} ~=~\boxed{\boxed{\sf{1}}}}}$

D)

 $\large\text{\textsf{6^-^2 ~+~ \sf{\dfrac{35}{36}} }}\\\\\\\large\text{\textsf{ \sf{\dfrac{1}{6^2}} ~+~ \sf{\dfrac{35}{36}} }}\\\\\\\large\text{\textsf{ \sf{\dfrac{1}{36}} ~+~ \sf{\dfrac{35}{36}} }}\\\\\\\large\text{\textsf{ \sf{\dfrac{1~+~35}{36}} }}\\\\\\\large\text{\textsf{ \sf{\dfrac{36}{36}} ~=~\boxed{\boxed{\sf{1}}}}}$