\(\left(\dfrac{1}{4}+\dfrac{1}{7}\right)\times\dfrac{1}{3}\\ =\left(\dfrac{7}{28}+\dfrac{4}{28}\right)\times\dfrac{1}{3}\\ =\dfrac{11}{28}\times\dfrac{1}{3}\\ =\dfrac{11}{84}\)

C1:

\(\left(\dfrac{1}{4}+\dfrac{1}{7}\right)\times\dfrac{1}{3}\\ =\left(\dfrac{7}{28}+\dfrac{4}{28}\right)\times\dfrac{1}{3}\\ =\dfrac{11}{28}\times\dfrac{1}{3}\\ =\dfrac{11}{84}\)

C2:

\(\left(\dfrac{1}{4}+\dfrac{1}{7}\right)\times\dfrac{1}{3}\\ =\dfrac{1}{4}\times\dfrac{1}{3}+\dfrac{1}{7}\times\dfrac{1}{3}\\ =\dfrac{1}{12}+\dfrac{1}{21}\\ =\dfrac{7}{84}+\dfrac{4}{84}\\ =\dfrac{11}{84}\)

(1/4 + 1/7) x 1/3

= 11/28 x 1/3

= 11/84

(1/4 + 1/7) x 1/3

= 1/4 x 1/3 + 1/7 x 1/3

= 1/12 + 1/21

= 11/84

Ta có 

33⁴⁴=(3.11)⁴⁴=3⁴⁴.11⁴⁴=(3⁴)¹¹.11⁴⁴=81¹¹.11⁴⁴

44³³=(4.11)³³=4³³.11³³=(4³)¹¹.11³³=64¹¹.11³³

=> 33⁴⁴>44³³

KL:

b) 5²²²²=(5²)¹¹¹¹=25¹¹¹¹

2⁵⁵⁵⁵=(2⁵)¹¹¹¹=32¹¹¹¹

=> 5²²²²<2⁵⁵⁵⁵

KL

giup mk ik

20/31 > 19/33

12/33 < 13/15

45/46 < 46/47

mik ko biet co dung ko nhung dung thi duoc con ko thi thui...

giải ra hộ mk

33⁵²<44³⁹

Ta có 33^44=(33^4)^11=1185921^11

          44^33=(44^3)^11=85184^11

Vì 1185921^11>85184^11 nên 33^44>44^33 

33⁴⁴ = 11^3.44 = 11¹³²

44³³= 11^4.33  = 11¹³²

vậy 33⁴⁴ = 44³³

Trả lời:

a) \(2^{4000}\) và    \(4^{2000}\)

Ta có:

\(2^{4000}=\left(2^2\right)^{2000}=4^{2000}\)

Vậy \(2^{4000}=4^{2000}\)

~ Học tốt ~

a, \(2^{4000}=\left(2^4\right)^{1000}=16^{1000}\)
 

\(4^{2000}=\left(4^2\right)^{1000}=16^{1000}\)

\(\text{ Vì }16^{1000}=16^{1000}\text{ }\Rightarrow\text{ }2^{4000}=4^{2000}\)

a, Ta có :

\(2^{4000}=\left(2^2\right)^{2000}=4^{2000}\)

\(\text{ Vì }4^{2000}=4^{2000}\text{ }\Rightarrow\text{ }2^{4000}=4^{2000}\)

^{33mũ 44 > 44 mũ 33}

33⁴⁴và44³³

=33^11.4 và 44^11.3

=132¹¹ và 132¹¹

vì 132¹¹=132¹¹

=.33⁴⁴=44³³

\(33^{44}=\left(11^4.3^4\right)^{11}\)

\(44^{33}=\left(11^3.4^3\right)^{11}\)

\(3^4=27.3\)\(4^3=16.4\)

\(\Rightarrow33^{44}>44^{33}\)

sát dịnh mục tiêu ai không k bắn

=>12,5x=125

=>x=10

12,5 × x = 47,4 + 77,6 

12,5 × x = 125 

            x = 125 ÷ 12,5 

            x = 10 

Vậy x = 10

3⁴⁴ = 3^4.11 = ( 3⁴ )¹¹ = 81¹¹

4³³ = 4^3.11 = ( 4³ )¹¹ = 64¹¹

Vì 81 > 64 => 81¹¹ > 64¹¹ hay 3⁴⁴ > 4³³

3 mũ 44 = 4 mũ 33 

nếu thấy mình đúng thì k nha