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! stuck on 2

the time is takes to mow the lawn at a large park m(x) varies inversely with the numbers of workers assigned to the job x. it takes 90 minutes to complete the job when 3 workers are assigned to it.

which equation can be used to find the time to complete the job when x workers are assigned to it?

a.) m(x)= 270/x
b.) m(x) = 270x
c.) m(x) = 30/x
d.) m(x) = 30x

2. suppose that h(x) varies inversely with x and h(x)=50 when x =0.25

what is h(x) when x =2?

a.) 0.5
b.) 6.25
c.) 12.5
d.) 24

can you also provide how you got the answer as well : )

For the second one the answer is 6.25 I just took the quiz

Step-by-step explanation:

Hope it helps:)

the answer is; biodiversity resulting from few ancestors

adaptive radiation occurs when a population is subjected to a large natural environment with spatial ecological variations. the parts of the population in the different ecologies begin to adapt to their local environments. due to non-random mating across the large populations, this causes the different populations from the large population to speciate within their local environments. they, therefore, diverge to different species sharing a common ancestor.  

yes

step-by-step explanation:

yes