Calculate the discount and selling price. Marked Price Discount Amount of Discount Selling Price 1. $100 12% 2. $75 20% 3. $60 25% 4. $72.80 15% 5. $150 8% 6. $980 121⁄2% 7. $24.98 162⁄3% 8. $47.70 331⁄3%

If f(x)= sqrt4x+9+2, which inequality can be used to find the domain of f(x)?

9.4.34  question   to estimate the height of a stone  figure, an observer holds a small square up to her eyes and walks backward from the figure. she stops when the bottom of the figure aligns with the bottom edge of the  square, and when the top of the figure aligns with the top edge of the square. her eye level is 1.811.81 m from the ground. she is 3.703.70 m from the figure. what is the height of the figure to the nearest hundredth of a  meter?

The perimeter of △cde is 55 cm. a rhombus dmfn is inscribed in this triangle so that vertices m, f, and n lie on the sides cd , ce , and de respectively. find cd and de if cf=8 cm and ef=12 cm. the answer is not cd=20 and de=15. i have tried that one, it does not work.