What is blank divided by 9 equals 5

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

Mexico city, mexico, is the world's second largest metropolis and is also one of its fastest-growing cities with a projected growth rate of 3.2% per year. its population in 1991 was 20,899,000 people. use the formula p = 20.899e0.032t to predict its population p in millions with t equal to the number of years after 1991. what is the predicted population to the nearest thousand of mexico city for the year 2010?

Which number produces a rationale number when multiplied by 1/5