What are the critical values x2l and x2r that correspond to a 99% confidence level and a sample size of 30?

Malia is observing the velocity of a cyclist at different times. after two hours, the velocity of the cyclist is 15 km/h. after five hours, the velocity of the cyclist is 12 km/h. part a: write an equation in two variables in the standard form that can be used to describe the velocity of the cyclist at different times. show your work and define the variables used. (5 points) part b: how can you graph the equations obtained in part a for the first 12 hours? (5 points) if you can try and make this as little confusing as you can

What is the solution to the system of equations? (–2, –8) (–1, –5) (0, –2) (2, 4)

60 2(x + 2) in the diagram, gef and hef are congruent. what is the value of x?