Because the denominators will always stay the same, no matter what. If they are the same, they will remain the same; however, if they are different, they will be changed to be the same before the numerator is considered.
Answer:
15% of 20 is 3
Step-by-step explanation:
15% is 15/100 which can reduce to 3/20.
3/20*20
The 2 20's cancel out.
All you have left is 3.
15% of 20 is 3
Hope this helps!
Answer:
4
Step-by-step explanation:
Answer:
1432 years
Step-by-step explanation:
A(t) = I(0.5)^t/t1/2
Where t1/2 = half life = 1660
Final amount, A(t) = 0.55 of its original amount =. 0.55I
Hence, we have
0.55I = I(0.5)^t/1660
Take the log of both sides
Log(0.55) = log(0.5)^t/1660
t/1660 = log(0.55) / log(0.5)
t/1660 = 0.8624964
t = 0.8624964 * 1660
t = 1431.7441
t = 1432(nearest whole number)
Answer:
3
Step-by-step explanation:
3 x 8 = 24
24/8 = 3