Question

Q. 2.
5
Q. 3. If 3x + 4y = 7 and 10x - y = 9, then find value of 4x + 6y
Q.4. A tangent PQ at a point P of a circle of radius 12 cm meets a line through the centre 0 to a point
so that OQ = 20 cm. Then find length of PQ.
3 then find the other zero.​

Answer 1

Answer:

Q.3- it's given 3x+4y=7and 10x-y=9

using simultaneous equation: x=1;y=1

so, the value for 4x+6y=4(1)+6(1)

=4+6=10

so 10 is the required answer

hope you'll find it easy