How to find the coordinates of the orthocenter of a triangle?

Which of these equations, when solved, gives a different value of x than the other three? a9.1 = -0.2x + 10 b10 = 9.1 + 0.2x c10 – 0.2x = 9.1 d9.1 – 10 = 0.2x

You buy five cds at a sale for $5.95 each. write an expression for the total cost of the cds.then use the distributive property and mental math to evaluate the expression.

Asalad dressing recipe calls for 1 teaspoon of vinegar and three tablespoons of olive oil to only make 1/3 of the recipe for a single portion how much of each ingredient would you need