This is an easy half-life problem.
Every half-life, a substance loses half its radioactivity. So, after 2 half-lives, a substance will have a quarter of its radioactivity.
2 * 5,700 = 11,400 years
answer is C
Answer:
504 in³
Step-by-step explanation:
this is a rectangular prism and the volume formula is v = l * h * w
so now
v = l*w*h
v= 6*8*12
v = 576 inch³
that's not the answer, that's the volume for whole thing but there is a gap and we have to subtract it from the whole volume. you can look at the option and say it's 504 inch³ from common sense. here is the work:
the gap has 2 inch length, 6 inch width and 6 in height.
v = l*h*w
v = 6 * 2 * 6
v= 72 inch
now subtract the gap volume from total volume so
576 - 72 = 504 in³
Answer:
Friends
Step-by-step explanation:
Answer:2 decimal places
Step-by-step explanation:Multiply
Answer:
b
Step-by-step explanation:
