Which polygon is always regular?

triangle

rectangle

octagon

square

Drag each scenario to show whether the final result will be greater than the original value, less than the original value, or the same as the original value. 1. a 25% decrease followed by a 50% increase 2. a 20% decrease followed by a 25% increase

What is the answer to |-2x-5|-|-4+8| and x=7

What is the simplified form of square root of 400 to the 100th power ?