the half-life of a substance is defined as the period of time it takes for the amount of the substance to decay by half. The sequence below shows the amount of the substance that will be left after a number of half lives have elapsed... 1, 1/2, 1/4, 1/8

7 weeks

step-by-step explanation:

convert each fraction to the least common multiple of 20, so 3/4 = 15/20 & 1/10 = 2/20, then divide 15 by 2 and you get a little over 7, so the food will last 7 weeks.

i get you, what you should do is think of the positive things that would come out of it. it will make yours parents proud and raise your grade. you should always try and if you can't focus tell the teacher.

answerim :

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step-by-step explanation:

im not sure but my dad knows