Answer:
It is the right-angled triangle.
Step-by-step explanation:
According to the Pythagorean theorem, 
, which c is the longest side of the triangle.
So, 
if the triangle is right angle.
∵LHS=RHS
∴It is a right-angled triangle.
Answer:
The range is 3.
Step-by-step explanation: To find the range you have to subtract the largest data number from the smallest data number. The highest is 3 and the lowest is 2. 3-2 is 1.
I'm pretty sure that's correct :).
Answer:
Hypotenuse = 11.4 cm
Step-by-step explanation:
Hypotenuse ² = opposite ² + adjacent ²
Opposite = 7 cm
Adjacent = 9 cm
Hypotenuse ² = opposite ² + adjacent ²
= 7² + 9²
= 49 + 81
Hypotenuse ² = 130
Hypotenuse = √130
= 11.40
Hypotenuse = 11.4 cm
Answer:
-2k
Step-by-step explanation:
