Question

29. The cost of preparing We W
metre is Rs.340.20 and the cost of matting the floor at 85 palse per square metre is
30. Using factor theorem factorise: f(x)= 22 -5x + 6
OR
Simplify: (a + b + c)2 + (a - b + c)2 + (a + b -c)2
31. In the figure, three coplanar lines intersect in a common point, forming angles as
shown. Given a=50° and b=90°; find the values of c, d, e, and f.
a
d
32. An underground water tank is in the form ofa cuboid of edges 48 m, 36 m and 28
m. Find the volume of the tank.
33. Check whether he polynomial q(0) = 4t 3 + 4t2-t-1 is a multiple of 2t +1 or not.
OR
If x=2 is a rock of the polynomial f(x) = 2x2 - 3x+ 7a, find the value of a.
34. The blood groups of 30 students of class IX are recorded as follows:
A, B, O, O, AB, O, A, Q. B, A, O, B, A, 0, 0, A, AB, D, A, A, O, Q, AB, B, A, O, B,
A, B, O,
A student is selected at random from the class from blood donation. Find the
probability that the blood group of the student chosen is:
(i) A (ii) B
(iii) AB
(iv)
35. The popular on of four major cities in India in a particular year is given below:
City:
Mumbai
Kolkata
Delhi
Chennai
Number of students:



80
Construct a bar graph to represent the above data.
OR
The path of a train A is given by the equation 3x+ 4y - 12 = 0 and the path of
another train B is given by the equation 6x + 5y - 48 = 0. Represent this situation
​

Answer 1

Voltage is the pressure from an electrical circuit's power source that pushes charged electrons (current) through a conducting loop, enabling them to do work such as illuminating a light. In brief, voltage = pressure, and it is measured in volts (V).

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