what is the half-life of the radioactive isotope? what mass of the radioactive isotope will be left after three(3) half-lives?

for finding the midpoint of any given 2 pair of points simply add the respective x coordinates with other x coordinate and the y coordinate with other y coordinate and divide them by 2

in your question it will be :

(3+1)/2 for the x coordinate of mid point i.e 2

[8+(-4)]/2 for the y coordinate of midpoint i.e 2

so coordinates of mid point of points (3,8) and (1,-4) will be (2,2)

coins of silver or gold

step-by-step explanation:

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step-by-step explanation:

because that's the answer