Diophantus, a Greek mathematician who lived in the 3rd Century B. C., found a connection between triangular numbers (T) and square numbers (K) Find the square number when the triangular number is
a). 6
b). 21
c). 78
d). 276
e). 406
f). 820

Before simplifying, how many terms are there in the expression 2x - 5y + 3 + x?

During a bike challenge riders have to collect various colored ribbons each 1/2 mile they collect a red ribbon each eighth mile they collect a green ribbon and each quarter mile they collect a blue ribbion wich colors of ribion will be collected at the 3/4 markrer

Solve: 25 points find the fifth term of an increasing geometric progression if the first term is equal to 7−3 √5 and each term (starting with the second) is equal to the difference of the term following it and the term preceding it.