Prove angle bcd is congruent to angle fed

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?

The graph shows the distance kerri drives on a trip. what is kerri's speed?

Plz ( true - false) all triangles have interior angles whose measure sum to 90.