Element X is a radioactive isotope such that every 25 years, its mass decreases by half. Given that the initial mass of a sample of Element X is 90 grams, how long
would it be until the mass of the sample reached 55 grams, to the nearest tenth of a
year?

yes the total will be same because in both of them the expression.is rearranged but their sign remains the same hence it hss just been shuffled

he has now walked a total of what?

if i know what this is maybe i can

step-by-step explanation:

answer: two angles are called supplementary if they add up to 180°. example: the two angles (140° and 40°) are supplementary because they add up to 180°.

step-by-step explanation:

could u provide us some answer choices or hmm idk maybe a table for us to anser with ? ?