ps= \(\dfrac{4}{24}\)

1) a

2) c

3) c

1) do you live

=> live

2) is he doing

=> water

3) is she doing 

=> is

4) are

5) playing 

6) watching 

7) go

-have

-am

-visit

C) \(\dfrac{329}{90}\)

D) \(\dfrac{297}{50}\)

WTFFFFFF

A) 47-(X+15)=21

x+15=47-21=26

x=26-15

x= 11

b) (-5)-(24-x)=-11

24-x=-5+-11=6

x=24-6

x=18

c) 100-(2x-14)=150

2x-14=100-150=-50

2x=-50+14=-36

x=-36:2

x=-18

d) 54-(9-3x)=102

9-3x=54-102=-48

3x=9-(-48)=57

x=57:3

x=19

mình nhầm chỗ mét ấy nên kp đúng là = (102,5.16):2

đáy = 102,5 cm

cc = 160 cm 

dt bằng (102,5.160):2

i) = 83,75

k) = 11

o) = 19606

q) = 59

3 phút bằng 3.60=180 s

0,2 phút bằng \(\dfrac{1}{5}\)= 60.1:5=12

3,2 phút = 192 s