Add
a³b(a²-2a+3) and 2ab(a³+3a²-5b)
please answer this question step wise​

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

Jackie purchased 3 bottles of water and 2 cups of coffee for a family for $7.35. brian bought 4 bottles of water and 1 cup of coffee for his family for $7.15. how much does each bottle of water cost? how much does each cup of coffee cost? i need this done

Write an equation of the line that passes through 9,2 and is parallel to the line y=5/3x+9