Tabit ibn qorra (826 - 901) invented the following rule for finding amicable numbers if p = 3 2^n - 1 q = 3.2^n - 1 - 1 r = 9.2^2n - 1 - 1 are three prime numbers, then 2^n pq and 2^n r are pair of amicable number can you give two pairs of amicable numbers bigger than 100 using qorra's rule.

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

step-by-step explanation:

if you want to separate 54 into 6 individual tiers then you need to divide if you want to separate 54 into 6 individual tiers then you need to divide 6 and 54.

if you divide 9 by 6 you will get 54.

- hope i .

i got so much points from yo a.