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LP
2
2 tháng 7 2016
30:3 phần 10 = 1
30:2 phần 10 = 3 phần 2
đúng thì k cho mình nha!
2 tháng 7 2016
30 : 3/10 = 100
30 : 2/10 = 150
Mình nhanh nhất nha !!!!!!!
XN
12
15 tháng 9 2017
10 x 45 - 25 x 10
= 10 x ( 45 - 25 )
= 10 x 20
= 200
100 x 2 + 100 x 3
= 100 x ( 2 + 3 )
= 100 x 5
= 500
15 tháng 9 2017
10 x 45 - 25 x 10
= 10 x [45 - 25]
= 10 x 20
= 200
100 x 2 + 100 x 3
= 100 x [2 + 3]
= 100 x 5
= 500
M
33
0
8 tháng 2 2018
\(2=10\)
\(3=15\)
\(4=20\)
\(5=25\)
\(6=30\)
đúng ko?
Kết bạn với tớ nhìu nha
8 tháng 2 2018
Ta thấy như ở cột thứ nhất có các giá trị là
2,3,4,5,6
Còn ở cột thứ hai là
10,15,20,25,?
Theo chu kì như vậy thì số tiếp theo để điền vào ? là số 30
Tk mk
NT
Nguyễn Thị Thương Hoài
Giáo viên
VIP
1 tháng 10 2025
10+9-8+7-6+5-4+3-2+1-0
= 10 +[(9 - 8) + (7 - 6) + (5 - 4) + (3 - 2) + (1 - 0)]
= 10 + [1 + 1 + 1 + 1 + 1]
= 10 + 1 x 5
= 10 + 5
= 15
ND
9
14 tháng 9 2025
1 + 1 - 2 + 14 - 4 + 20 - 15 + 10 - 5 + 100 - 60 x 2
= (1 + 1 - 2) + (14 - 4) + (20 - 10) + (15 - 5) + 100 - 120
= (2 - 2) + 10 + 10 + 10 + 100 - 120
= 130 - 120
= 10
BN
1
NT
9
NL
Nguyễn Lê Phước Thịnh
CTVHS
30 tháng 9 2025
Số số hạng của dãy số là:
10-0+1=11(số)
Tổng của dãy số là: \(\left(10+0\right)\times\frac{11}{2}=10\times\frac{11}{2}=5\times11=55\)
5 tháng 10 2025
8888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888+999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999=bao nhiêu?
NT
4
3 tháng 5 2018
\(-\frac{2}{3}\cdot x+\frac{13}{15}=\frac{7}{10}\)
\(-\frac{2}{3}\cdot x=\frac{7}{10}-\frac{13}{15}=-\frac{1}{6}\)
\(x=-\frac{1}{6}:\left(-\frac{2}{3}\right)=\frac{1}{4}\)
20
20 và bn k spam
=20
20