Answer:
82
Step-by-step explanation:
1'st step: 
+ 
= 
is the formula for the pythagorean theorem
2'nd step : 
+ 
=
3'rd step: 324+6400 =
4'rd step: 6724=
5'th step: 
=82
6'th step : therefore the value of c is 82 cm
Answer:
The mode, which is 7, is not a typical distance for the data. The median, which is 3.5, is not a typical distance for the data. The mean, which is 4, is a typical distance for the data. So, Grace’s reasoning is not correct.
The answer to this question is 4x= y-4
Well for 11, it is an inequality, a > sign or < sign with a little underscore mean either "greater than or equal to" or "less then or equal to" so 30> 12+m (>with an underscore) means 30 is greater than or equal to 12+m
