How do you know that each of these constructions is valid when made with a compass and straightedge?

Is 28.4575 smaller than 28.4509

I am a 2 dimensional shape that has 3 acute angles. All my sides are the same length. I have no parallel sides

On the subway 8 out of 11 people are carrying a briefcase. Based on this information, if there are 700 on the subway, then about how many do not have a briefcase?

Equal ratios to 18/9

What are the solutions of the equation x^4 + 95x^2-500=0? Use factoring to solve

What is the scale factor of a cube with a volume of 512m^3 to a cube with a volume of 3,375m^3 A. 8:15 B. 64:225 C. 15:8 D. 225:64

The volume of 10,000 drops of a liquid is 10 fluid ounces. What is the volume of 10 drops?

Write 5 numbers that are at least 8 digits in standard form

Solve the following equation: - 3x + 20 = 9x - 2x

If you add a constraint to an optimization model, and the previously optimal solution satisfies the new constraint, will this solution still be optimal with the new constraint added?