This hyperbola is centered at the origin. find its equation. foci: (0,-9) and (0,9) vertices: (0,-7) and (0,7)

Afarmer sells 9.5 kilograms of apples and pears at the farmer's market. 4/5 of the weight is the apples and the rest is the pears. how many kilograms of pears did she sell at the farmers market

For what value of (y) is 3^3/3^y =1/9

If sin(x) = 0 and cos(x) = 1, what is tan(x)?