Radioactive technetium-99m is often used in diagnostic medicine because it has relatively short half-life but lasts long enough to get the needed testing done on the patient. If its half-life is 6 hours, how much of the radioactive material from a 2.5ml injection will be in the body in 30 hours? Write your answer rounded to nearest hundredth.

0.08 ml

Step-by-step explanation:

Given that

The half life is 6 hours

The injection is 2.5 ml

And, it remains in the body till 30 hours

We need to find out that how much of the  radioactive material remains in the body

So,

= 2.5 × (1 ÷ 2) ^(30 ÷ 6)

= 2.5 × (1 ÷ 2) ^5

= 0.0781

= 0.08 ml

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,

it will cost dollar $540

the living room is 3 which means if we divide 325/3 then we get $108

therefore if 1part of the living room cost $108 and 3 costed $325

then total 5part of the room will cost 5*108 which gives $540