How do you write two more than twice a number is 20?

How can we find the measure of an exterior angle if we know the measurement of an interior angle

Which best describes the strength of the correlation, and what is true about the causation between the variables? it is a weak negative correlation, and it is not likely causal. it is a weak negative correlation, and it is likely causal. it is a strong negative correlation, and it is not likely causal. it is a strong negative correlation, and it is likely causal.

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab