Q). Which of the following is a solution for the equation 2(x + 3) = 18?
A) 6
B) 5
C) 21
D) 13
Q). If 3x + 4y – k = 0 and 6x + 8y – 4 = 0 are coincident lines, then the value of k is
A) 3
B) 4
C) 6
D) 2
Q). The roots of x- = 2 are
A) 1,3
B) 3,-1
C) 2,2
D) 1,2
Q). If one root of 3x2 + 2x + k = 0 is the reciprocal of the other, then the value of k is
A) 3
B) -3
C) 2
D) 6
Q). If the roots of 2 x2 + kx + 3 = 0 are real and equal, then the value of k is
A) ± 2√6
B) ± 6√2
C) ± 4
D) ± 5
Q). A ball is thrown vertically upward from the ground. The distance s in t seconds is given by s = 4 t2 +t-3. After how many seconds does the ball come to rest?
A) 2s
B) 1s
C) 3/4 s
D) 4/3 s
Q). The product of the roots of √2 x2 – 10x + 5√2 = 0 is
A) 5√2
B) 5
C) 2√5
D) 2
Q). The discriminant of = 2 is
A) 21
B) 23
C) 27
D) 45
Q). If twice the age of A is added to B’s age, the sum is 45 and if twice the age of B is added to A’s age, the sum is 30. Then the age of B is
A) 20
B) 5
C) 10
D) 30
Q). 3 pens and 5 pencils together cost ₹ 35, whereas 5 pens and 3 pencils together cost ₹ 37. The cost of a pencil is
A) ₹ 5
B) ₹ 3
C) ₹ 4
D) ₹ 6
Good