What does a negative sign in front of a parentheses mean

Adele works at an appliance store. She recently sold 18 appliances, 2 of which were ovens. What is the experimental probability that the next appliance Adele sells will be an oven? Simplify your answer and write it as a fraction or whole number.

Which data set has the widest spread? data set a: 1, 1, 2, 1, 2, 1 data set b: 2, 2, 4, 4, 3, 3 data set c: 1, 1, 2, 2, 1, 5 data set d: 3, 5, 5, 5, 5, 4

Sue's Sushi placed two orders with its fish supplier. One order was for 11 pounds of salmon and 6 pounds of tuna; the order totaled $197. The other order was for 8 pounds of salmon and 4 pounds of tuna; this order totaled $140.

What is k in 3/k = 4/5

Having a problem with this haha. if Y x Y x Y = 7 whats Y?

Whitney has a total of 30 cupcakes for her guests. the function rule, 30 : x where x is the number of guests, can be used to find the number of cupcakes per guest.

Solve the equation x^1:2 - 4 = 1

Wayne bought blueberries. Do you to 3/8 of the blueberries to make blueberry bread, 1/6 of the blueberries to make pancakes, and 5/12 of the Blueberries to make jam.

Shanti wrote the predicted values for a data set using the line of best fit y = 2.55x - 3.15. she computed two of the residual values. what are the values of a and b?

Diamond took out a 3-year loan for $2825 at a sports-equipment store to be paid back with monthly payments at a 7.8% APR, compounded monthly.