\(\frac{x+y}{4}=5\) .Hoi X ,Y bang bao nhieu?
a, -3/5 = ? = ? = ?
b, 3/ x - 5 = -4 / x + 2, hoi x bang bao nhieu?
Trả lời:
\(a.-\frac{3}{5}=-\frac{6}{10}=-\frac{9}{15}=-\frac{12}{20}\)
_Su_
x+1+2+3+4+5+6+7+8+9+10+11+...+100=250000
Hoi x bang bao nhieu
x+1+2+3+....+100 = 250000
x + 5050 = 250000
x = 250000 - 5050
x = 2244950
x+1+2+3+....+100 = 250000
x + 5050 = 250000
x = 250000 - 5050
x = 2244950
@@ hacker
x+1+2+3+4+5+6+7+.....+100=250000
suy ra x+(1+100)x100:2=250000
suy ra x+101x50=250000
suy ra x+5050=250000
suy ra x=250000-5050
x=244950
cho 2 so x va y >0 . biet x:y =4:5 va xy=5 . khi do x bang bao nhieu
x:y=4:5
=>x/y=4/5
=>x/4=y/5
đặt x/4=y/5=k
ta có :x=4k
y=5k
=>x.y=4k.5k=20.k^2=5
=>k^2=1/4
=>k=1/2
=>x/4=1/2=>x=2
=>y/5=1/2=>y=5/2
x = 1 + 2 + 3 + 4 ...........23443..? hoi x bang bao nhieu
Cho 15x chia 5y bang 45y . . Khi do x/y BANG bao nhieu
(x+1)+(x+2)+(x+3)+(x+4)+......(x+100)
Hoi tong tren bang bao nhieu
(x+1)+(x+2)+...+(x+100)=(x+x+...+x)+(1+2+...+100)=100x+5050
sasmo x 4 = ogams hoi sasmo bang bao nhieu??????????????????????????????????????????????
S<=2=> S=1 hoac 2
ms chia het cho 4=> S=2
O>=4=>O={4,5,6,7,8,9}
4.O=tan cung 2=> O=8
4.m+3 tan cung m=> m=9
298x4=1192=> a=1
4.1+1 tan cung g=>g=5
;;;;;;;;;;;;;;;;;;;;;;;
21298x4=85192
Cho x,y là các số khác 0 . Nếu \(x+y=xy\) thi \(\frac{1}{x}+\frac{1}{y}\) bang bao nhieu?
\(\frac{1}{x}+\frac{1}{y}=\frac{y+x}{xy}=\frac{xy}{xy}=1\)
giả sử x=y=2(thỏa mãn đầu bài)
thì \(\frac{1}{2}+\frac{1}{2}=\frac{2}{2}=1\)
tick đúng cho mình nha
cho day so 10,11,12,13,14,...,,x. hoi x bang bao nhieu de chu so cua x gap 4 lan so so hang trong day