Giúp e bài này vs ạ
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Bài 2: Chọn C
Bài 4:
a: \(\widehat{C}=180^0-80^0-50^0=50^0\)
Xét ΔABC có \(\widehat{A}=\widehat{C}< \widehat{B}\)
nên BC=AB<AC
b: Xét ΔABC có AB<BC<AC
nên \(\widehat{C}< \widehat{A}< \widehat{B}\)
1 Last week the doctor advised him not to swim in a few weeks
2 William Shakespeare was born on April 23th, 1564
3 He was the eldest son of a wealthy glove maker
4 He got married to Anne Hathaway and had three children
5He moved to Lon don in 1588 and joined in a theatrical company
Bài 5:
A[-2;10)
\(A\cup B=\left(-\infty;10\right)\)
\(A\cap B=\varnothing\)
A\B=[-2;10)
B\A=(-\(\infty\);-3)
Bài j e nhỉ?