Có bao nhiêu giá trị nguyên của m để bất phương trình mx2 - 2(m+2)x+2m-1<0 vô nghiệm

The zoo collects $9.60 for every 24 tickets sold. how much will be collected for 400 tickets?

Tommy buys a sweater that is on sale for 40% off the original price. the expression p -0.4p can be used to find the sale price of the sweater, where p is the original price of the sweater. if the original price of the sweater is 50, what is the sale price?

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)