Answer:
72
Step-by-step explanation:
32pi×360/2pi(8)=72
central angle= arc length 360/2pi×r
I'll give you the answers but make sure you know how to do these.
1) -32
2) -11
3) 77
4) -23
5) -1.3
6) -19.32
7) -10.4
8) 1.408
9) -1/4
10) 9/5
11) -1/6
12) -2 2/3
Hope this helps
Answer:
7x-17y
Step-by-step explanation:
We need to find the expression which represents the difference when (-2x+10y) is subtracted from (5x−7y) . Let the result is R.
So,
R = (5x−7y)-(-2x+10y)
Solving brackets as follows :
R = (5x−7y)+2x-10y
taking like terms together
R = (5x+2x)+(-7y-10y)
R = 7x-17y
Hence, when (-2x+10y) is subtracted from (5x−7y) the result is (7x-17y).
Let's call the width of our rectangle
and the length
. We can say
, since the length is equal to 4 cm greater than the width.
Also remember that the perimeter of a rectangle is the sum of two times the width and two times the length, or
. To solve this problem, we can substitute in the information we know, as shown below:
![150 = 2(w + 4) + 2w](https://tex.z-dn.net/?f=150%20%3D%202%28w%20%2B%204%29%20%2B%202w)
![150 = 4w + 8](https://tex.z-dn.net/?f=150%20%3D%204w%20%2B%208)
![142 = 4w](https://tex.z-dn.net/?f=142%20%3D%204w)
![w = \frac{71}{2}](https://tex.z-dn.net/?f=w%20%3D%20%5Cfrac%7B71%7D%7B2%7D)
Now, we can substitute in the width we found into the formula for length, which is
:
![l = \frac{71}{2} + 4](https://tex.z-dn.net/?f=l%20%3D%20%5Cfrac%7B71%7D%7B2%7D%20%2B%204)
![l = \frac{79}{2}](https://tex.z-dn.net/?f=l%20%3D%20%5Cfrac%7B79%7D%7B2%7D)
The width of our rectangle is
cm and the length of our rectangle is ![\boxed{\frac{79}{2} \,\, \textrm{cm}}](https://tex.z-dn.net/?f=%5Cboxed%7B%5Cfrac%7B79%7D%7B2%7D%20%5C%2C%5C%2C%20%5Ctextrm%7Bcm%7D%7D)
Answer:
answer would be -10 for x