Answer:
c =
km
Step-by-step explanation:
Here's the required formula to find the missing side of triangle by pythagoras theorem :

a = 20 km
b = 21 km
c = ?
Substituting all the given values in the formula to find the third side of triangle :

Hence, the length of missing side of triangle is 29 km.

Answer:
-3
Step-by-step explanation:
(3x + 10)98°
294x+980
294x=-980
X=-980/294
X=-3
So the value of X is -3
Answer:g(x)=2(3)+1=6+1=7
Step-by-step explanation:7
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