HOC24
Lớp học
Môn học
Chủ đề / Chương
Bài học
1. most
2. blossom
3. fireworks
4. church
5. envelops
6. decorate
7. person
8. square
324+{12−(112+324)}
=324+12−(112+324)
=324+12−112−324
=12-112
=-100
1+1=3
A=1+4+4\(^2\)+4\(^3\)+...+4\(^{1999}\)+4\(^{2000}\)
=(1+4+4\(^2\))+(4\(^3\)+4\(^4\)+4\(^5\))+...+(4\(^{1998}\)+4\(^{1999}\)+4\(^{2000}\))
=(1+4+4\(^2\))+4\(^3\)(1+4+4\(^2\))+...+4\(^{1998}\)(1+4+4\(^2\))
=21(1+4\(^3\)+...+4\(^{1998}\))⋮21
a: 12:x=144
x=\(\dfrac{12}{144}\)
x=\(\dfrac{1}{12}\)
b: x−17=(−2)⋅27
x−17=−54
x=−54+17
−37
c: 3x−125=145
3x=125+145=270
x\(\dfrac{270}{3}\)x=90
=3
17. David has very few__friends___beaause he’s selfish( FRIENDLY)
18. My mom can make___tastier__soup than the soup in his restaurant(TASTE)
19. Baking a cake needs__more__time than making a sandwich.(MUCH)
20.Soup is healthy and tasty.It can be made___easily___.(EASY)
26 .Lisa / have / busiest / timetable / Monday.
->Lisa has the busiest timetable on Monday.
28. My dad / love / grate /cheese/pasta.
-> My dad loves grating cheese for pasta
30.There isn’t much ice cream in the fridge.
There is a little ice cream in the fridge.
A={-5,-4,-3,-2,-1,0,1,2,3,4,5,6,7}