book Maths Puzzle Numerical Ability

please solve the following inequalities as i am having some difficulties:

4x + 12 >= 36 + 4

8z + 4z < 6z - 12

thank you :)

Read Solution (Total 0)

book Other Question

Sir i need your help, i truly stumped with this one..
How many grams of an alloy containing 35% nickel must be melted with an alloy containing 65% nickel in order to obtain 20 g
The end points of a circle are A (-1,1) and B(0.5,-3).

a) Find the coordinates of the centre of the circle
b) find the radius of the circle