the lengths of the sides of a triangle are in extended ratio 6:7:9. the perimeter of the triangle is 66 cm. what are the lengths of the sides?

Write a function that matches the description. a cosine function has a maximum of 5 and a minimum value of -5. f (r) =

Aquantity with an initial value of 3900 decays exponentially at a rate of 35% every hour. what is the value of the quantity after 0.5 days, to the nearest hundredth?

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.