Step-by-step explanation:
(x+2y)²=x²+4xy+4y²
...........
Answer:
It should take somewhere between 8 to 9 minutes to decay until there are 30 grams remaining.
Of means multiplication and Is means equals. So 0.81x =405
X = 500
Answer:
62%
Step-by-step explanation:
I took a fraction and made a decimal which was made into a percentage.
186 ÷ 300 = .62
Check: 62% • 300 = 186
