Linear Equations in Two Variables
Linear Equations in Two Variables
- A vector needs three quantities for its specification. Name the three independent quantities conventionally Angle of declination (magnetic declamatory) θ, angle of dip δ, horizontal component of earth’s magnetic field B_H are the quantities which a... 1
- Ankita travels 14 km to her home partly by rickshaw and partly by bus. She takes half an hour if she travels 2 km Let the speed of the rickshaw be x km/h Let the speed of the bus be y km/h. Time taken to travel 2 km by rickshaw, t₁ = 2/x hours. Time take... 1
- The sum of two numbers is 60. The greater number is 8 more than thrice the smaller number. Find the numbers. Let assume two numbers be x and y x be the greater number and y be smaller number According to first statement in question x+y=60 ------(equ... 2
- The ratio of corresponding sides of similar triangles is 3:5 then find the ratio of their areas Let the corresponding sides of similar triangle be S1 and S2 , and Areas be A1 and A2 . we know that , S1:S2 =3:5 therefore S₁/S₂=4/5 A₁/A₂=... 1
- A boat travels 16 km upstream and 24 km downstream in 6 hours. speed of the boat in still water is 8 km/hr. and speed of water current is 4 km/hr. 1
- Places A and B are 30 km apart and they are on a straight road. Hamid travels from A to B on bike. At Speed of Hamid is 50km/hr and of Joseph is 40km/hr 1
- Two numbers differ by 3. The sum of twice the smaller number and thrice the greater number is 19. Find the numbers. hence, the two numbers are 5 and 2 Video solution https://youtu.be/1qCuzBxRJ40 1
- (1) Complete the following activity to solve the simultaneous equations. Solution: 3, -2 1