400 = four hundred
400 = 4.0 × 102
(25/100) x (1/100) = 25/10000 = 1/400
1 billion is 1,000,000,000 400 million is 400,000,000 added together is 1,400,000,000
4,000
0.25%% rate:= 1/400 * 100%= 0.0025 * 100%= 0.25%
0.25% = 1/400
400 percent = 4.0 or 4/1
1 400 000
1 million = 1,000,000 → 4 hundred million = 400 × 1 million = 400 × 1,000,000 = 400,000,000
Let's write it as 3600x = 400.Divide both sides by 3600: x=400/3600Simplify: x=1/9
400 = 202
Write it as in the question!
400 micrograms can be written as "400 mcg" or "400 µg".
400 = four hundred.
400 = four hundred
400 = 4.0 × 102