tính abc biết ab5 bc6 cb7
Những câu hỏi liên quan
tìm abc biết abc chia hết cho 45 và ab5 - 5ba = 396
tính diện tích HTG vuông abc đáy bc 4/5 dm chiều cao ab5/6 dm
giải giúp mình nha cảm ơn
Diện tích Hình tam giác vuông ABC là:
5/6:2x4/5=20/60(dm2), rút gọn thành 1/3dm2
Đáp số: 1/3dm2
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1. Tìm ab biết :
5ab = ab5 + 25
2. Cho ABC có diện tích = 50 cm2 . Trên đường cao AH lấy điểm M ở chính giữa. Tính diện tích MBC
1/ tìm a,b ( a,b khác 0 ) biết :
1/a + 1/b = 5/9
2/ So sánh :
A = abc + 1700
B = 123c + ab5 + ab7
3/Tìm x biết :5/2x - 0,5x= 16
Tìm ab biết : ab5 = ab + 104
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Tìm ab5 biết a>b
đợi tí alo gọi bác hồ hoặc siêu nhân đến giải cho
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Tìm chữ số x biết:
a) 36,75 x 4 < 367544/10000
b) ab5, 728 < ab5,7x4 < ab5, 755
Làm nhanh mình sẽ k cho bạn
câu a: 36,75<x4<367544/10000
= 36,75<x*4<36,754
= x=9,1
câu b: 125,728;125,734;125,755
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Bài 1: Tìm số ab biết 5ab - ab5 = 324
Bài 2 :Tìm số ab biết 8ab = ab8 × 5 + 25
Bài 1: \(\overline{5ab}-\overline{ab5}=324\)
\(500+\overline{ab}-\left(\overline{ab}\times10+5\right)=324\)
\(500+\overline{ab}-\overline{ab}\times10-5=324\)
\(495-\overline{ab}\times9=324\)
\(\overline{ab}\times9=171\)
\(\overline{ab}=171:9\)
\(\overline{ab}=19\)
Bài 2: \(\overline{8ab}=\overline{ab8}\times5+25\)
\(800+\overline{ab}=\left(\overline{ab}\times10+8\right)\times5+25\)
\(800+\overline{ab}=\overline{ab}\times50+65\)
\(735=49\times\overline{ab}\)
\(\overline{ab}=15\)
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1. Tìm số tự nhiên có 3 chữ số biết rằng số đó gấp 5 lần tích các chữ số của nó.
Hướng dẫn: Giả sử số đó là abc thì abc = a x b x c x 5. Như vậy c = 5 nên ta có: ab5 = a x b x 25. Bạn tìm tiếp a và b nhé
