Tiffani1239
Answered

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A pine tree measured 40 1/2 feet tall. Over the next 7 1/2 years, it grew to a height of 57 feet. During the 7 1/2 years, what was the average yearly growth rate of the height of the tree?

Sagot :

mel2169

 First subtract how tall it was 7 1/2 years ago from how tall it is now.
57 - 40 1/2 =

57 -  40.5 =  16.5 or 16 1/2

So in the 7 1/2 years the tree grew 16 .5 or 16 1/2 feet. To get the average yearly growth for the 7 1/2 year period you have to divide the 16 1/2 feet by 7 1/2 years.

It makes it much easier if you change the fractions to decimals.

16 1/2 = 16.5

7 1/2 = 7.5

16.5  ÷  7.5  = 2.2 or 2 1/5 feet per year

Hope this helps. :)

jakobywoerne715

Answer:

2 1/5 per year

Step-by-step explanation:

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