If you mean: -4+3+2s = 15 then s = 8
22+22
you do 2 + 2
2s-4 equals 2(s-2). You can find the answer by factoring two out of both numbers.
44 11 4 __2 2 lines go from 44 to 11 and 4 lines go from 4 to both 2s
If you mean: -4+3+2s = 15 then s = 8
2 + 2 + 2 + 2 = 8
Four 2s make 8, so 25% is your answer
You can make the number 9 using five 2s by adding them together like this: 2 + 2 + 2 + 2 + 2 = 10, then subtracting 2: 10 - 2 = 8, then dividing by the remaining 2: 8 รท 2 = 4, and finally adding two more 2s: 4 + 2 + 2 = 9.
22+22
you do 2 + 2
This is easy. Make two equations, and represent the sandwiches with s and the drink with d. you get: 2s+d=10 s+2d=8 After simplifying and taking away a variable, you figure out that each sandwich costs 4 dollars and each drink costs 2 dollars. (Heres the step by step algebra) 2s +dy = 10 s + 2d = 8 2s + d = 10 2s + 4d = 16 3d = 6 d = 2 2s + d = 10 2s + 2 = 10 2s = 8 s = 4 So, Sandwich = £4 Drink = £2
There are 8 atoms of hydrogen present in NH4 2S. This is because there are 4 hydrogen atoms in each ammonium ion (NH4+) and there are 2 ammonium ions in NH4 2S.
2, 4, 6, 8, 12, 14, 16
The chemical formula for ammonium sulfide is written as (NH4)2S. In each molecule, there are 2x4=8 atoms of hydrogen.
22/2 - 2
2, 4 8, 16, and 32.