Answer:
We'd need more information like the relationship between those equations.
Step-by-step explanation:
Answer:
13.636
Step-by-step explanation:
The area can be found using Heron's formula:
A = √(s(s-a)(s-b)(s-c))
where s=(a+b+c)/2.
For the given triangle, ...
a=9, b=4, c=12, s=(9+4+12)/2 = 12.5
A = √(12.5(3.5)(8.5)(0.5)) = √185.9375 ≈ 13.636
The area of the triangle is about 13.636 square units.
Answer:
The system has infinitely solutions
Step-by-step explanation:
we have


Multiply by 3 both sides
----> equation A
The equation A is a circle centered at origin with radius 
and


Divide by 5 both sides
----> equation B
The equation B is a circle centered at origin with radius 
Equation A and Equation B are the same
Therefore
The system has infinitely solutions
The midpoints of the sides of the trapezoid are:
M ( - 1 , 1 ), N ( 1, - 1 ), P ( 3, 1 ), Q ( 1, 3 ).
MN = NP = PQ = QM = √ ( 2² + 2² ) = √ 8 = 2√2
∠MNP = ∠NPQ = ∠PQM = ∠QMN = 90°
Answer:
The quadrilateral formed by joining the midpoints of the sides of the trapezoid is a square.