Điều kiện: nf n f    5; (1 ) 5trong loại kiểm định giả thuyết “so sánh tỷ lệ tổng thể với số cho trước”, (với n là cỡ mẫu, f là tỷ lệ mẫu) có ý nghĩa gì?

The vertices of a triangle are a(7,5), b(4,2), c(9,2). what is m

Amodel rocket is launched from a roof into a large field. the path of the rocket can be modeled by the equation y = -0.04x^2 + 8.6x + 4.8, where x is the horizontal distance, in meters, from the starting point on the roof and y is the height, in meters, of the rocket above the ground. how far horizontally from its starting point will the rocket land? a. 0.56 m b. 215.56 m c. 431.11 m d. 215.74 m

Which of these tools or constructions is used to inscribe a hexagon inside a circle?