Abigail orders a large 2 topping pizza for $14 and a medium 1 topping pizza for$10. if all costs of a medium pizza are 80% of a similar large pizza, find the price of a large plain cheese pizza and the cost of each large pizza topping.

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.

Let x = a + bi and y = c + di and z = f + gi. which statements are true?