Answer: The answer is 20
Step-by-step explanation: If all interior angles are 162o , polygon has 20 sides.
Answer: 
Step-by-step explanation:
By the Pythagorean theorem, the unknown side has length

Therefore,

Answer:
Subtract the result of three times five with 1.
Step-by-step explanation:



Subtract the result of three times five with 1.
Answer:
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Step 1:Solve one of the equations for either x = or y = .
Step 2:Substitute the solution from step 1 into the other equation.
Step 3:Solve this new equation.
Step 4:Solve for the second variable.
I hope this helps!