Answer:

Step-by-step explanation:
Given: 
To find: 
Solution:
From the image, 
Put 


Therefore,

Answer:
Given sides 12, 16 and 20 can be the sides of right triangle.
Step-by-step explanation:
Sides of right triangle always follow the Pythagoras theorem.
i.e 
For the given Lengths 7, 40 and 41
We need to check if


That means, 
hence 7,40 and 41 can not be the sides of right triangle.
Next,
Given sides 12,16 and 20.
Again follow the similar process used in the above problem.

Therefore given sides 12,16 and 20 can be the sides of right triangle.
Answer:
x=12
Step-by-step explanation:
Complementary angles add up to 90 degrees. 90-66=24. 24 divided by 2 is 12.
Answer:
For the spinner to be fair, each outcome will be equal
The relative frequencies in the table are very different
This means it is likely that the spinner is fair
Step-by-step explanation:
Superman is my favorite super hero