Yes it is hl because thats what it is
For example, exc. 15.
x + y = 10 and 6/x = 9/y; You need y!
=> x = 10 -y and 9x = 6y => 9(10-y) = 6y => 90 - 9y = 6y => 15y = 90 => y = 6.
Answer:
(x+12) (x-12)
Step-by-step explanation:
12x12=144
Answer:0.2
Step-by-step explanation:
Given

total solution for
is given by 
here 
i.e. 
For 


no of solutions for this equation is

if one solution is chosen at random Probability that u=1


R<5
r has to be less than 5, now doesn't it