Answer:
18 and 65
Step-by-step explanation:
under 18 would be 17 and under, therefore not including 18 year olds. obviously they are not 19 yet either, so they wouldn't fall into either category, therefore they may be unsure of what to answer.
same with 65 year olds; they are more than 64 year old, but not yet /over/ 65, therefore they would not fit into either category either.
The fence is 210 ft long.
There is a post every 3.5 ft.
If you divide 210 ft by 3.5 ft, you get the number of spaces between posts.
(210 ft)/(3.5 ft) = 60
The fence starts with a post. Then there is 3.5 ft of fencing. Then there is another post. Then there is another 3.5 ft of fencing followed by a post. In total there are 61 posts.
Here's another way of thinking of why you end up with 60 posts.
For each 3.5 ft of fencing, you place a post at the end of the fencing.
Since there are 60 3.5-ft-long pieces of fencing, there will be 60 posts, one at the end of each piece of fencing. The first thing that is done is to put the initial post before any fencing is put up. The first post plus 60 more posts add up to 61 posts.
Now that you see why there are 61 posts, we can calculate their cost.
61 * $8.50 = $518.50
Answer:
−
8
x^
2
+
62
y
^2
+
46
Step-by-step explanation:
heheheh I do math lol
Solution :
Let 
be the unit vector in the direction parallel to the plane and let 
be the component of F in the direction of 
and 
be the component normal to .
Since, 
Therefore, 
From figure,
We know that the direction of 
is opposite of the direction of , so we have
The unit vector in the direction normal to the plane, 
has components :
Therefore, 
From figure,
∴ 
Therefore,
the asnwer is 14 feet 5 inches because you add feet and then inches
