The sum of sally's age plus twice tomas's age is 12. the difference of sally's age and thomas's age is 3. write and solve a system of equation to find their ages. interpret the solution.

One expression below in undefined, and the other expression has a well defined value. which expression is undefined and explain why it has no value. which expression is defined? what is the value of that expression and how do you know? what is a different expression using a trig inverse function that is also undefined?

40 describe the outliers from the scatter plot.

Order the measurements from the least to the greatest. 2,720 ml , 24.91 l , 0.0268 kl