So sorry to be a bother very confused on how to work this out if a radioactive element has a half-life of 2 hours, then x grams of the element dwindles to x/2 after 2 hours.

If a nuclear reactor has 1200 grams of that radioactive element, find the amount of radioactive material after 8 hours. ​

step-by-step explanation:

you divide the denominator by the numerator on both sides and if the quotients are equal then the fractions are equivalent

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet

i think the answer is d im not sure

10.4 inches

step-by-step explanation:

2x2x2.6