Five friends al, bet, cat, don, and ella live on the island where everyone is either a knight or a knave

Atriangle includes one angle that 72º. which pair could be the measures of the other two angles of the triangle? a. 9º, 9º b. 26º, 46º c. 53º, 55º d. 72º, 108º

If a baby uses 15 diapers in 2 days how many diapers will the baby use in a year

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2