Đội tuyển học sinh giỏi lớp 5 sau khi đi học được 2 tháng thì loại 3/7 số bạn. Sau đó tiếp tục loại thêm 1/4 bạn còn lại thì còn 6 bạn. Hỏi lúc đầu đội tuyển có bao nhiêu bạn?

Identify an equation in point slope form for the line perpendicular to y=3x+5 that passes through (4,-1)

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

The table below shows the number of free throw shots attempted and the number of shots made for the five starting players on the basketball team during practice. each player's goal is to make 80% of her shots. players number of free throws made free throw attempts kelly 16 20 sarah 25 30 maggie 31 40 liz 44 50 kim 47 60 how many players made at least 80% of their shots? round to the nearest percent.