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Syllabus
2/x - 1/y = 1
Solve by reducing them to pairs of linear equations
Please explain the steps...
Q. The sides of an equilateral triangle are (6x + 3y) cm, (8x + 9y - 5) cm and (10x + 12y - 8) respectively. Find the length of each side.
[Hint. Take 6x + 3y = 8x + 9y - 5 and 8x + 9y - 5 = 10x + 12y - 8 as two equations.]
Help plz
Plz solve this question by linear equations.
Take no. of customers as 'x' & no. of lines as 'y'.
Find x & y
30. A boat sails a distance of 44 km in 4 hours with the current. It takes 4 hours 48minute longer to cover the same distance against the current. Find the speed of boat on still water and the speed of the current.
Answer: 5i-x=2,y=1,5ii-x=?&y=5/4
0.2x + 0.1y = 25
2 (x - 2) - 1.6y = 116
x - 2x/3 + y/3 = 1
Solve by elimination method
Please tell question no.9
Q9. The ratio of two numbers is . If 2 is subtracted from the first and 8 from the second, the ratio becomes the reciprocal of the original ratio. Find the numbers.
1=> 0.4x-1.5y=6.5
0.3x+0.2y=0.9
2=> ?2x - ?3y=0
?5x + ?2y=0
(27/8)2/3 - (1/4)-2 + 50
DR=d
No links, please.....
3/x + 4y = 7
5/x + 6y = 13
Q. 2x + 3y = 17
3x - 2y = 6
4x - 3y = -1
Find p, if y = px - 3
Linear Equations by substitutional method
1= The sum of two no.s is 8 and the sum of their reciprocals is 8/15.Find the no.
2=The difference between 2 positive no.s x and y(x>y)is 4 and the difference between their reciprocals is 4/21.Find the no.s
3= The sum of the digits of a two digit no.7.If the digits are reversed, the new no.decreased by 2,equals twice the original no. Find the no.
33. A man travels 600km partly by train and partly by car. If he covers 120km by train and the next by car, it takes him 8 hours. But, if he travels 200km by train and the rest by car he takes 20 minutes longer. Find the speed of the car and that of the train.
11x+13y=74
Method of elimination by equating coefficient
2x-3y+6=0
2x+3y-18=0
Q.48. 8 men and 12 boys can finish a work in 10 days while 6 men and 8 boys can finish the same work in 14 days. Find the time taken by 1 man and that 1 boy alone to finish the work.
3/x + 4y =7. 5/x + 6y =13
5x+y=9
Using substitution method
Q. 8 The lengths of the sides of the triangle are given in centimetres as:
If the triangle is equilateral, prove that the triangle whose sides are (2xy+1), (2x+1) and (6y+1) cm each is also equilateral.