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2023-12-14 20:12:30
Ý a) nha em vì 3,5,7,11 đều là số nguyên tố
2023-02-09 20:58:35
Giải:
(x+1)+(x+3)+...+(x+59)=1710
=>(x+x+x+...+x)+(1+3+..+59)=1710
=>30\(\times\)x+900=1710 (30 số x)
=>30\(\times\)x=810
=>x=810:30=27
Vậy x=27
Chúc bạn hok tốt
2023-02-09 20:52:18
2023-02-09 20:30:34
crashed nha bạn
2023-02-09 20:29:13
\(\approx\)83,3km nha bạn
2023-02-09 20:28:38
a) Tỉ số phần trăm giữa 2 số 250 và 400 là:
250\(\div\)400x100=62,5%
b)Cả đoạn đường đó dài là:
10\(\div\)12x100=83,3...%