Một bao bột mỳ có trọng lượng từ 39,5 đến 40,5 được coi là đạt tiêu chuẩn. Một lô hàng gồm 8.000 bao bột mỳ. Kiểm tra ngẫu nhiên 100 bao thấy có 10 bao không đạt tiêu
chuẩn. Với độ tin cậy 95% xác định số bao bột mỳ đạt tiêu chuẩn tối thiểu của lô hàng.

Is a positive integer raised to a negative power always positive

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

Carla was trying to decide what to do saturday evening. she has $100 available to spend for the evening. she has narrowed her choices down to these events: braves game, a concert of an artist she likes, or the georgia aquarium. admission to the braves game is $25, hot dogs cost $10, sodas cost $5. the concert costs $25 for admission, $20 for a souvernir t-shirt, and $10 for a soda. the georgia aquarium has the show of a lifetime with an all you can eat and drink that costs $100. carla does not want to take any driving chances, so in addition to the cost of the aquarium, she will also need to pay for her uber/lyft, which is $15 each way. which option should carla choose if she wants to spend the least? based on that choice, what then is carla's oppotunity cost? fully explain your answer in at least one paragraph.