Answer:
4x + 2x = 90 NOT 180.
Step-by-step explanation:
x = 15 is the correct answer.
Answer:
what is the question?
Step-by-step explanation:
Answer:

Step-by-step explanation:
Given
4
The 4 can be placed inside the radical by squaring it, that is
4
= 
= 
= 
Answer:
To find : If 21m, 28m and 49m form a right angle or not.
Logic : To find if this triangle is a right angle, we can use the Pythagoras Theorem, which states that the square if the longest side should be equal to the square of the sum of the other two sides.
The name of the longest side is called the hypotenuse, while the others are called legs or one is the perpendicular and the other the base.
Proof : 
=> 
=> 2401 = 784 + 441
=> 2401 ≠ 1225
Therefore these side lengths cannot be the lengths of a right angled triangle.
If my answer helped, kindly mark me as the Brainliest!!
Thank You!