Trong tiêu chuẩn cực trị tự do, khi nào một điểm dừng của một hàm số hai biến chưa chắc là điểm cực trị tự do hay điểm yên ngựa? cho ví dụ nếu có thể

anyone? find the second, fifth, and ninth terms of a sequence where the first term is 65 and the common difference is -7. 72, 93, 121 72, 79, 86 58, 37, 9 58, 51, 44

Write the fraction 9/50 as a decimal if needed round to the nearest hundredth

Onnie is considering doing some long term investing with money that she inherited. she would like to have $50,000 at the end of 30 years. approximately how much money would lonnie need to put into an account earning 6% interest compounded annually in order to meet her goal?