Question

ПОМОГИТЕ СРОЧНО ДАЮ 50 БАЛОВ!!!!!!!​

Answer 1

Ответ:

6.

1 $(-1\frac{1}{4} )^{-2}$   A $\frac{16}{25}$

2 $(0,4)^{-2}$   B $\frac{25}{4}$

3 $4^{-2}$   Г $\frac{1}{16}$

7.   В $126\frac{9}{16}$

Объяснение:

6.

1 $(-1\frac{1}{4} )^{-2} =(-\frac{5}{4} )^{-2} =\frac{(-5)^{-2} }{4^{-2} } =\frac{1}{(-5)^{2}} :\frac{1}{4^{2}} =\frac{1}{25} :\frac{1}{16} =\frac{1}{25} *\frac{16}{1} =\frac{16}{25}$

2 $(0,4)^{-2} =(\frac{4}{10} )^{-2} =(\frac{2}{5} )^{-2} =\frac{2^{-2} }{5^{-2} } =\frac{1}{2^{2}} :\frac{1}{5^{2}} =\frac{1}{4} :\frac{1}{25} =\frac{1}{4} *\frac{25}{1} =\frac{25}{4}$

3 $4^{-2} =\frac{1}{4^{2} } =\frac{1}{16}$

7.

$(0,2)^{-3}=(\frac{2}{10})^{-3}=(\frac{1}{5})^{-3}=\frac{1^{-3} }{5^{-3} } =\frac{1}{1^{3} } :\frac{1}{5^{3} } =\frac{1}{1} :\frac{1}{125} =1*\frac{125}{1} =125$

$(1\frac{1}{3})^{-2}=(\frac{4}{3})^{-2}=\frac{4^{-2} }{3^{-2} }=\frac{1}{4^{2}} :\frac{1}{3^{2}} =\frac{1 }{16} :\frac{1}{9} =\frac{1}{16} *\frac{9}{1} =\frac{9}{16}$

$2,47^{0} =1$

$125+\frac{9}{16} +1=126\frac{9}{16}$