LaTanya will walk (3 mi/hr) her bike from her house to the bike shop, which is 1.5 mi from her house, to get the bike

fixed. She expects to wait 30 min for the repair. Then she

will ride (10 mi/hr) her bike home. How long will it take

her to get home?

A)2.12 hr

B)2hr

C)1.15

D)4hr

1.15 hr

Step-by-step explanation:

Given that:

To get bike fixed :

Speed = 3 miles per hour

Distance = 1.5 miles

Time taken = distance / speed

Time taken = 1.5 / 3 = 0.5 hour

Waiting time for repair = 30 minutes = 0.5 hours

Return home :

Speed = 10 miles per hour

Distance = 1.5 miles

Time taken = distance / speed

Time taken = 1.5 / 10 = 0.15 hour

Total time : (0.5 + 0.5 + 0.15) = 1.15 hr

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.  

answer:   x = 3 + √11     and     x = 3 - √11

step-by-step explanation:

x² - 6x + 9 = 11

(x - 3)² = 11

x - 3 = ±√11

    x = 3 ± √11

x = 3 + √11     and     x = 3 - √11