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14 tháng 1 2021

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14 tháng 1 2021

74. what color are his pencils?

75. when does mr tam always work?

76. who is your close friend?

77. where are they going to have dinner?

78. how many texts are they going to read?

81. what is she going to buy?

82. what does his grandmother usually tell him in the evening?

83. what does our mother buy at that clothing store?

84. when does this man bring us milk?

85. who always have dinner at home?

86. how many does she want of coffee?

87. what does mrs white always have for breakfast?

88. when do you always go to school with my friends?

89. what is mary's mother going to do?

90. what time does your mother always have breakfast?

14 tháng 1 2021

74. What color are his pencils?

75. When does Mr.Tam work?

76. Who is your close friend?

77. Where are they going to have dinner?

78. How many texts are they going to read?

79, 80 không có phần gạch chân.

81. What is she going to buy?

82. What does his grandmother usually tell him in the evening?

83. What does your mother buy you at that clothing store?

84. When does this man bring you milk?

85. Who always have dinner at home?

86. How much coffee does she want?

87. What does Mrs.White always have for breakfast?

88. When do you always go to school with your friends?

89. Where is Mary's mother going?

90. What time does her mother always have breakfast?

14 tháng 1 2021

54. How much beef would you like?

55. What does he want?

56. How much oil does she want to cook?

57. What do you feel?

58. What color are her eyes?

59. Where is the well?

60. What is Mr. Quan doing with the vegetables?

61. What does your sister do?

62. Why do you go to bed early?

63. How is she traveling?

64. Where are your friends playing?

65. What is Mr. Tan doing in his room?

66. What are Linh and Quang doing in the classroom?

67. What is your sister doing?

68. Where is he reading?

69. Where is the train going to?

70. What is her sister doing?

71. Where is your mother work?

72. What are Nam and Ba going to do?

73. Where is Bill going to take their chairs?

13 tháng 1 2021

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28 tháng 12 2021

mgu

10 tháng 11 2021

Theo mik là "D"

 

Liệu sai?

10 tháng 11 2021

hông bt nữa

Nghe theo bạn vậy

 

25 tháng 9 2021

\(\left(x-1\right)^4=\left(x-1\right)^2\)

\(\Rightarrow\left[{}\begin{matrix}x-1=1\\x-1=-1\\x-1=0\end{matrix}\right.\)\(\Rightarrow\left[{}\begin{matrix}x=2\\x=0\\x=1\end{matrix}\right.\)

11 tháng 12 2021

Những chuyển biến trg đời sống vật chất:

+ Công cụ lđộng = kim loại dần thay thế công cụ đá

+ Nhiều ngành sản xuất mới xuất hiện: nông nghiệp dùng cày, chăn nuôi, nghề luyện kim, ...

=> Xuất hiện 1 lượng sản phẩm dư thừa

Sự thay đổi trg đời sống xã hội:

+ GĐ phụ hệ thay thế GĐ mẫu hệ

+ Xã hội phân hoá giàu - nghèo

=> Xã hội nguyên thuỷ tan rã hình thành xã hội có giai cấp

Gọi số sách là x

Theo đề, ta có: \(x\in BC\left(8;12;15\right)\)

hay x=480

4 tháng 12 2021

x = -3 và x = 1 

4 tháng 12 2021

\(\Leftrightarrow\left\{{}\begin{matrix}x+3=0\\x-1=0\end{matrix}\right.\Leftrightarrow\left\{{}\begin{matrix}x=-3\\x=1\end{matrix}\right.\)