Answer:
8.898% will remain after 20000 years.
Step-by-step explanation:
First week need to know the half-life of carbon-14.
In this case it's 5,730 years.
There are calculators available online. (I'm too lazy to run through the equation.) 8.898% will remain after 20000 years.
Answer:
Continuous
Step-by-step explanation:
There is never a period of time when the water's flowing halts because the opening and closing of the first and second pipe are overlapping. Hope this helps (:
Answer:
Step-by-step explanation:
15
Answer:
13/100
Step-by-step explanation:
Answer: 3:1
Step-by-step explanation:
Since the jewellery shops sell 240 necklaces in a month and 180 of the necklaces were sold via the shop's website, this means that (240 - 180) = 60 necklaces were sold in a high street shop.
Therefore, the ratio of online sales to shop sales will be:
= 180 / 60
= 3 / 1
= 3:1
