Answer:
x = 10
Step-by-step explanation:
note that sin30° = 
Since the triangle is right use the sine ratio to find x
sin30° =
= 
multiply both sides by x
x ×
= 5 ( multiply both sides by 2 )
x = 10
Answer:
A. A rotation of 360° clockwise.
Step-by-step explanation:
The rotation rule for clockwise is as such:
360°: (x , y) → (x , y)
This means that the rotation of 360 degrees about the origin is equal to a rotation of 0 degrees. So the transformation would map the image onto itself; the image stays the same.
For this problem, we can use the formula for combinations, which is:

, where we have <em>n</em> objects choosing <em>r</em> at a time

7*6 is 42, and 42/2 is
21. There are
21 possible combinations
:)
Perimeter is 2l+2w
Therefore 20=2(6)+2w. Solve for w to get
w=3
Hope this helped ;)