Tìm tất cả các giá trị của tham số m để phương trình mcosx+m-1=0 có nghiệm thuộc đoạn [0 ; pi/2]

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way

What is the area of a triangle with vertices at (-3 3) (-3,2) and (1,2)?