Trong một thùng chứa 100 sản phẩm, trong đó có 70 sản phẩm loại A, 30 sản phẩm loại B. Lấy
ngẫu nhiên 20 sản phẩm ra kiểm tra. Tính xác
suất để trong số sản phẩm lấy ra đó có ít nhất
1 sản phẩm loại A.

The average human heart beats 1.15 \cdot 10^51.15⋅10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65⋅10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year. how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.

Aplane is taking off from bangladesh headed to new york city. at the same time, a plane from new york city is headed to bangladesh is also taking off. the plane bound to new york city is traveling at 600 mph, while the plane traveling to bangladesh is traveling at 400 mph. how far from new york city will the two planes meet if the distance between new york city and bangladesh is 8,000 miles?

Which spreadsheet would be used to compute the first nine terms of the geometric sequence a^n=32•(1/2)n-1