Mathematics SSS1

Factorise 8x² - 14x - 9

• (4x +9)(2x + 1)

• (4x - 1)(2x + 1)

• (4x - 9)(2x +1)

• (2x -1)(4x+9)

Solve the equation.

y² -3y =0

• y = 1 or 3

• y =0 or 3

• y =1 or -3

• y= 0 or -3

If ξ = {a, b, c, d, e} and X = {a, b,c }, then X' =

• {a}

• {a, b,c}

• {c,d}

• {}

What is the sun of the root of the equation

x² - 3x + 2 = 0

• 3

• 2

• 1

• 0

Find the quadratic equation whose roots are -1 and +3

• y² - 2y +3 =0

• y²+2y-3=0

• y²+2y+3=0

• y² - 2y -3 =0

Find the length of an arc which subtends an angle of 112° at the centre of a circle of radius 9cm.[Take π=22/7]

• 61.6cm

• 17.6cm

• 8.8cm

• 121cm

----- is a chord which passes through the centre of a circle

• Segment

• Arc

• Radius

• Diameter

Find the angle θ° which an arc 22cm long subtends at the centre of a circle of radius 12cm [Take π = 22/7]

• 105°

• 310°

• 12°

• 4.6°

Given that A ={1, 3, 5, 7, 9} and B= {2, 4,5, 6, 8, 10, 12}. Find ( A U B)

• {}

• {5}

• {1, 2, 3, 4, 5, 6, 7, 8,9,10}

• {1, 2, 3, 4, 5, 6, 7, 8, 9, 10,12}

P and Q are two sets which are given as follows: P ={a, b, c, d} and Q ={c, d,e}. Find n( P U Q)

• 7

• 6

• 5

• 4