It looks like 4 i think so
Answer:
x=10
Step-by-step explanation:
Answer:
a) Yes
b)No
c) Yes
d) No
Step-by-step explanation:
Remember, a collection of subsets of a set is a partition of if the union of the subsets is , that is, and the elements of are disjoints.
Let
Then
a) and .
Then the collection is a partition of B.
b) and
Since the sets aren't disjoints then they aren't a partition of B.
c)
and
Then the elements of the collection are disjoints.
Therefore, is a partition of B.
d) because . Then the collection isn't a partition of B.
Radius = 50.93
Diameter = 101.86
Area = 8148.87
Answer:
43.13 yd squared
Step-by-step explanation:
This is a figure composed of a semicircle and a right triangle.
Triangle:
The area of a triangle is denoted by A = (1/2) * B * h, where b is the base and h is the height. Here, the base is actually also the radius of the semicircle, which is 4. The height is 9. Plug these in: A = (1/2) * 4 * 9 = 36/2 = 18 yd squared.
Semicircle:
The area of a semicircle is denoted by A = , where r is the radius. Here the radius is 4. So: A = ≈ 25.13 yd squared.
Adding these up: 18 + 25.13 = 43.13 yd squared
Hope this helps!