Huilan is 6 years younger than Thomas. The sum of their ages is 64. What is Thomas's age?

Solve each equation using the quadratic formula. find the exact solutions. 6n^2 + 4n - 11

Write the equations in logarithmic form 7^3=343

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?