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The ratio of two numbers is 5 to 4. the sum of the numbers is 99. what number is the greater of the two numbers?

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

Asocial networking site currently has 400,000 active members, and that figure is predicted to increase by 32% each year. the following expression represents the number of active members on the site after t years.