1+1+23+66=?
nhanh nhak
K
Khách
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PK
Bài 1: Tính nhanh
d, 66 . 25 + 5 . 66 + 66 . 14 + 33 . 66
Bài 2: Tìm x
7 + ( 63 : X - 11 ) . 23 = 237
3
BA
10 tháng 9 2020
Bài 1
\(d,66\cdot25+5\cdot66+66\cdot14+33\cdot66\)
\(=66\left(25+5+14+33\right)\)
\(=66\cdot77\)
\(=5082\)
Hình như chép sai đề vì không thể nào tính nhanh đc
Bài 2
\(7+\left(63:x-11\right)\cdot23=237\)
\(\Leftrightarrow\left(63:x-11\right)\cdot23=230\)
\(\Leftrightarrow63:X-11=10\)
\(\Leftrightarrow63:x=21\)
\(\Leftrightarrow x=3\)
10 tháng 9 2020
Bài 1 :
\(d,66.25+5.66+66.14+33.66\)
\(=66.\left(25+5+14+33\right)\)
\(=66.77\)
\(=5082\)
Bài 2 :
\(7+\left(63:x-11\right).23=237\)
\(\Leftrightarrow\left(63:x-11\right).23=230\)
\(\Leftrightarrow63:x-11=10\)
\(\Leftrightarrow63:x=21\)
\(\Leftrightarrow x=3\)
Vậy x = 3 .
Học tốt nhé
ND
2 la mã nhak. Giúp mình cho 1 like. Cần gấp nhanh nhanh nhak những thần đồng.
2
29 tháng 7 2016
II Put the verbs into the most suitable passive form
1) There's someone behind us . I think we are being followed ( follow )
2) A mystery is something that can't be explained ( can't / explain )
3) We didn't play football yesterday .That match was cancalled ( cancle )
4) The televison has been repaired ( repair ) . It's working again now.
5) The church tower is being restored ( restore ). The work is almost finished .
6) How old is the tower ? It is believed ( believe ) to be over 600 years old .
7) If I didn't do my job properly , I would be sacked ( would / sack )
8) A : I left some papers on the desk last night and I can't find them now
B : They might have been thrown ( might / throw ) away
9) I learned to swim when I was very young . I was taught ( teach ) by my mother .
10) After being arrested ( arrest ), I was taken to the police station .
11) This road is being repaired ( repair ) so we have to take another road .
12) Two people are reported ( report ) to have been injured ( injure ) in an explosion at a factory early this morning .
13) I haven't receive the letter . It might be sent ( might / send ) to the wrong address .
14) The vegtables didn't taste very good . They had been cooked ( cook ) for too long .
15) The examination papers are scored by machine . The students will be told (tell) their results next week .
LL
2
25 tháng 11 2020
a) 98 + 87 + 76 + ... + 32 + 21 - 12 - 23 - ... - 78 - 89
= ( 98 - 89 ) + ( 87 - 78 ) + ... + ( 32 - 23 ) + ( 21 - 12 )
= 9 + 9 + 9 + ... + 9 ( ? số 9 )
Từ 21 đến 98 với khoảng cách 11 có số các số hạng là : ( 98 - 21 ) / 11 + 1 = 8 ( số hạng )
-> 9 * 8 = 72
b) ( 66 - 1 ) * ( 66 - 2 ) * ... * ( 66 - 98 ) * ( 66 - 99 )
Trong tích trên có thừa số 66 - 66 với giá trị bằng 0.
Vậy tích trên bằng 0.
c) cái này phức tạp lắm, rất khó mà tính
LT
0
1+1+23+66=91
1+1+23+66=91
#^_^