HOC24
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Môn học
Chủ đề / Chương
Bài học
Gọi 2 số đó là a,b(a,b∈R)a,b(a,b∈R)
Ta có a−b=7,6a−b=7,6
Vì số trừ gấp lên 3 lần thì được số mới là 9,6
⇒3b=9,6⇒b=3,2⇒3b=9,6⇒b=3,2
ko nhớ lớp 6 học tập hợp R chưa😅
⇒a=7,6−3,2=4,4⇒a=7,6−3,2=4,4
⇒ab=4,4⋅3,2=14,08⇒ab=4,4⋅3,2=14,08
Vậy tích 2 số là 14,08
đúng
sai
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daaa
26 người
=1x\(\dfrac{1}{100}\)
=1
A
=(152−148)+(144−140)+(136−132)+(128−124)+(120−116)+(112−108)+(104−100)=4+4+4+4+4+4+4=28
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