解答
解答
求解步骤
Translate the problem into an equation:
求解
找到 James's age
流行的例子
A coins is tossed 7 times. What is the probability 3 heads?2200 dollars is placed in an account with an annual interest rate of 6.5%. To the nearest year, how long will it take for the account value to reach 14100 dollars?A number is 30 less than its square. Find the numberKevin is 6 years older than Timothy, but 4 years ago Kevin was twice as old as Timothy, how old is kevin right now7 plus a number.