My answer
5 explaination common sense
Answer:

Step-by-step explanation:
<u>Length Of Semicircles
</u>
The length of a circle or radius r is

A semicircle has half this length:

The radius of the flowerbed is 2.5 m, thus the length of the edging material needed to border the lawn design is


Let x be the number.
Then:
(x)+(x+1)+(x+2)>102
(x)+(x+1)+(x+2)<109
x+x+1+x+2
3x+3>102
3x>102-3
3x>99
x>22
3x+3<109
3x<109-3
3x<106
x<35.33
Therefore, the number can be bigger than 22 but less than 35.333 to meet the requirements.
Hope I helped :)
Answer:
420 miles/7 hours = 60 miles per hour.
Its basically just the elements that makes up a compound element I believe