Answer:
b. I think??
Explanation:
not really sure so don't depend on me
Explanation:
20 men can do 1 W in 36 days
=> 20 men can do 1/36 W in 1 day
=> 10 men can do 1/72 W in 1 day.
30 girls can do 1W in 36 days
=> 30 girls can do 1/36 W in 1 day
=> 12 girls can do 1/90 W in 1 day.
Together 10 men and 12 girls can do 1/72 + 1/90 W in 1 day
= 9/360 = 1/40 W in 1 day.
Therefore they need 40 days to do the piece of work.
Bananas is one important reason that bantu speakers were successful in spreading their culture were introduced to Sub-Saharan Africa. This was useful because Bantu-speaking people could now migrate to places where yams did not grow easily.
The Bantu would travel in canoes across Africa's waterways and would stop at different areas to farm for some years. This can be how they spread their farming, iron working skills and language.
One of the primary sub-Saharan states in the geographic region to realize attention within the wider medieval culture world was the Ghana Empire (6-13th century CE), located in modern-day southern Mauritania and Mali.
The principal consequences of the Bantu migration, then, could also be summarized as: the spread of the Bantu and Bantu-related languages. the spread of iron-smelting and smithing technology. the spread of pottery techniques. These pioneers then shared their more advanced technologies (and, within the process, their languages) with the locals.
learn more about Bantu: brainly.com/question/5169666 \
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<span> person who flees for refuge or safety, especially to a foreign country, as in time of political upheaval, war, etc.</span>
Answer:
a) sensitivity analysis
Explanation:
Sensitivity analysis seeks to determine the effect of a variation of a particular item on its total value. That is, in the sensitivity analysis, several different variables are tested to understand the effect that each produces at the end of the process.