≈9.38
13² - 9² = x²
189 - 81 = 88
√88 = x
Given:
P = Set of all triangles,
Q = Set of scalene triangles,
R = Set of isosceles triangles and
S = Set of equilateral triangles.
To find:
Which of the following statements are true or false?
Solution:
We know that,
Scalene triangles : All sides are different.
Isosceles triangles : Two sides are equal.
equilateral triangles : All sides are equal.
Set of all triangles contains all scalene triangles. So, set of scalene triangles Q is a subset of Set of all triangles P.
![Q\subset P](https://tex.z-dn.net/?f=Q%5Csubset%20P)
So, (a) is true.
All isosceles triangles are not equilateral triangles. So, set of isosceles triangles R is not a subset of set of equilateral triangles S.
![R\nsubseteq S](https://tex.z-dn.net/?f=R%5Cnsubseteq%20S)
So, (b) is false.
Set of all isosceles triangles contains all equilateral triangles. So, set of equilateral triangles S is a subset of set of isosceles triangles R .
![S\subset R](https://tex.z-dn.net/?f=S%5Csubset%20R)
So, (c) is true.
Answer:
i don't know anymore
Step-by-step explanation: I don't know anymore
Answer:
3/16
Step-by-step explanation: