Answer:
True
Step-by-step explanation:
Given 2 similar figures with
ratio of edges = a : b, then
ratio of areas = a² : b² and
ratio of volumes = a³ : b³
The answer is 6:2. Since the greatest common denominator of both is 2 you divide it by both numbers to get the ratio.
20 and 21 is your answer
20 + 21 = 41
hope this helps
The experienced window washer can wash all the windows in Mike’s house in 2 hours, which implies that in 1 hour he completes 1/2 of the job.
By the same logic, the new trainee completes 1/7 of the job in one hour.
If they work together, they complete
![\dfrac{1}{2}+\dfrac{1}{7}=\dfrac{7}{14}+\dfrac{2}{14}=\dfrac{9}{14}](https://tex.z-dn.net/?f=%5Cdfrac%7B1%7D%7B2%7D%2B%5Cdfrac%7B1%7D%7B7%7D%3D%5Cdfrac%7B7%7D%7B14%7D%2B%5Cdfrac%7B2%7D%7B14%7D%3D%5Cdfrac%7B9%7D%7B14%7D)
of the job in one hour, meaning that they complete the job in 14/9 of a hour.