tính xOn xOm mOy biết nOy = 30 độ
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SV
Sinh Viên NEU
CTVVIP
12 tháng 10 2023
3 I don't have a ladder
4 We didn't have enough time
5 He didn't have a map
6 She doesn't have any money
7 I don't have enough energy
8 They didn't have a camera
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SV
Sinh Viên NEU
CTVVIP
12 tháng 10 2023
donate: book, fresh water, old clothes, water, food, money
clean: shool yard, houses, parks, streets, buildings
help: elderly people, homeless people, street children, poor people
repair: houses, streets, schoolyard, buildings
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H9
HT.Phong (9A5)
CTVHS
12 tháng 10 2023
\(9:27^x=\dfrac{1}{18}\)
\(\Rightarrow9:\left(3^3\right)^x=\dfrac{1}{18}\)
\(\Rightarrow3^{3x}=9:\dfrac{1}{18}\)
\(\Rightarrow3^{3x}=162\)
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KV
12 tháng 10 2023
4⁵.3² + 2¹⁰ - 2³⁰
= (2²)⁵.9 + 2¹⁰ - 2³⁰
= 2¹⁰.9 + 2¹⁰ - 2³⁰
= 2¹⁰.(9 + 1 - 2²⁰)
= 2¹⁰.(10 - 1048576)
= 2¹⁰.(-1048566)
= -1073731548
mong các bạn giải giúp mình
Ta có:
\(\widehat{xOn}=180^o-\widehat{nOy}=180^o-30^o=150^o\)
\(\widehat{xOm}=\widehat{nOy}=30^o\)(đối đỉnh)
\(\widehat{mOy}=\widehat{xOn}=150^o\)(đối đỉnh)