factorise this equation: x^2-3x-4
valerie00
Asked:
December 2022
Factorise 24r^2-15r-9 completely. Please explain properly too cause I take a very slow time to understand.
valerie00
Asked:
December 2022
what effect of an electric current is involved in the process of electroplating?
valerie00
Asked:
December 2022
what effect of an electric current is involved in the process of electroplating?
valerie00
Asked:
December 2022
The sum of the ages of Khairul and his mother is 52. Four years later, Khairuls's mother will be 3 times as old as Khairul. Find the present age of Khairul's mother.
5x-5=y 3x+2y=29 (substituition method)
valerie00
Asked:
December 2022
(a) How do sulfur and nitrogen react to form acid rain? (b) State two harmful effects of acid rain on the environment.
1/5x+y+2=0 y=1/3x-10 (substituition method)
2x-7y=5 -3x-4=y (substituition method)
valerie00
Asked:
December 2022
In four years' time, Kim's father will be three times as old as Kim. Six years ago, her father was seven times as old as her. By letting x and y be Kim's present age and Kim's father's age respectively, form two equations to find Kim's present age.
Factorise 3r^2s^2-14rs+16 completely. PLS HELPP
valerie00
Asked:
December 2022
The sum of two numbers is 48. If the smaller number is one-fifth of the larger number, find the two numbers.