Aright triangle has a leg of 13 cm and a hypotenuse of 21 cm. what is the length of the other leg? round to the nearest tenth.
8.0 cm
16.5 cm
4.7 cm
272.0 cm

Consider 6x2 + 6x + 1. which term immediately tells you that this expression is not a perfect square trinomial? justify your answer

1. the wheeling bridge in west virginia is about 307 meters long. if you walk with a stride of about meter, about how many steps would it take you to cross this suspension bridge?

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).