You play video games online. when you sign up with the game site, you get 400 points. you earn 50 more points for each hour that you play. how many hours do you have to play to get to 1,000 points?

If my mom gets $13.05 an hour, and she works from 3: 30 to 10: 45 in the morning, how much money does my mom make?

D. in a discrete probability distribution, the sum of the probabilities for the discrete variables will be > 1. true or false

The pyraminx is a rubik's cube-type toy in the shape of a tetrahedron. the pyraminx shown below has edges 15\,\text{cm}15cm long and vertical height h=12.2\,\text{cm}h=12.2cm. the triangle drawn with dashed lines is a right triangle. what is the distance rr? round your answer to the nearest tenth.