Choose the correct simplification of the expression 4 over y to the power of negative 3. a) 4y^3 b) 4 over y to the 3rd power c) y to the 3rd power over 4 d) this expression is already simplified.

Mrs. avila is buying a wallpaper border to go on all of her kitchen walls. she wants to buy 5 extra feet of wallpaper border than she needs to be sure she has enough. she buys 55.5 feet of the border. the store owner selling the border uses the width of mrs. avila's kitchen to determine that the length of her kitchen must be 14.5 feet.

The construction of copying qpr is started below. the next step is to set the width of the compass to the length of ab. how does this step ensure that a new angle will be congruent to the original angle?

Hi i’m not sure how to do question 20 if u could explain how to do it that’d b great