calculate the number of moles (mol)
7.5*10^24 particles
✓28/2✓35
$o$$
using the substitution method, solve the simultaneous equation
5x+3y=11 4x-y=2
8(x-5)=-32+8x
in a class of 60 teachers , 30 teaches mathematics , 27 teach physics ,21 teach chemistry ; 12 teach mathematics and physics but...
What is the coefficient of x in 2x+3?
(7(20) $^{1/3}$-1) $^{1/3}$
-8x-16=-8(x+2)
(1.15)^1/4.9
1-8n=-7+8(5-5n)
