Lời Giải
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The sum of two numbers is-42 and their hiệu is 52. Find these two numbers?The sum of the squares of two consecutive whole numbers is 61. Find the numbers.An engineer invests 10,000 a year for 20 years into a fund. At the end of the 20 years, how much money is in the fund if the interest rate was 4%?8300 dollars is placed in an account with an annual interest rate of 6.5%. How much will be in the account after 14 years, to the nearest cent?If the speed of a car is 45km/h, how far can it travel in 0.5hours?