The half price of helium-5 is 7.6 X 10 to the power of negative 22 seconds and the half-life helium -9 is 7 x 10 to the power of negative 21-second approximately how many times greater is the half life of helium and -9 then that of helium -5

Approximately 9.211 times

Step-by-step explanation:

Given

--- half life of helium-5

--- half life of helium-9

Required

How many times greater is y than x

To do this, we simply divide y by x

Apply law of indices

d. 9

step-by-step explanation:

54/12 = 4.5

sf = 4.5

so x = 2 · 4.5 = 9

the barter