A radioactive isotope that was originally 275 grams has decayed to 150 grams. the equation shown can be used to calculate the number of years/T, it took for the decay to occur 150 + 275e ^-0.1386t
what is the approximate number of years it took for the isotope to decay for 275 grams to 150 grams?

A.0.1 years
B.0.4 years
C.1.9 years
D.3.9 years
E.4.4 years

step-by-step explanation:

one of the most important purposes of surface treatment is to alter surface properties according to the requirement of specific applications. for example, hydrophobic coating has been utilized on windshield and eyeglasses. gold atom monolayer on substrate has become a popular surface bioconjugation strategy.  

what is the question? i am guessing you are looking for the area.

to find an area, you have to do length x width.

in this case, it would be 12 ft x 4 ft = 48 sq. ft

there are 70 more legs than eyes at the dog show (196 – 126 = 70). dogs have two more legs than eyes, and humans have the same number of legs as eyes. thus 70 is twice the number of dogs at the show, so the number of dogs is half of 70, which is 35. to get the number of humans, subtract 35 from 63: 63 – 35 = 28.

step-by-step explanation: