Cho một chuỗi gồm N số nguyên chẵn liên tiếp giảm dần. Nếu số đầu tiên là N và trung bình cộng của 5 số hạng đầu tiên lớn hơn số hạng cuối cùng là 1594 đơn vị thì N bằng bao nhiêu

65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?

Aball is dropped from a height of 10m above the ground. it bounce to 90% of its previous height on each bounce. what is the approximate height that the ball bounce to the fourth bounce?

The table below shows the approximate height of an object x seconds after the object was dropped. the function h(x)= -16x^2 +100 models the data in the table. for which value of x would this model make it the least sense to use? a. -2.75 b. 0.25 c. 1.75 d. 2.25