In triangle abc the measure of angle b is twice the measure of angle a and an exterior angle at vertex c measures 120 degrees. find the measures of angle a

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

If chord ab is congruent to chord cd, then what must be true about ef and eg?

Determine domain and range, largest open interval, and intervals which function is continuous.