What number should be added to the expression x2 - 15x to result in an expression equivalent to a perfect square?

Suppose that x and y are both differentiable functions of t and are related by the given equation. use implicit differentiation with respect to t to determine startfraction dy over dt endfraction in terms of x, y, and startfraction dx over dt endfraction .

Which equation matches the graph shown ?

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?