What is 6 and 68/100 in simplest form?

For what value of jn is mn parallel to kl

Solve each quadratic equation by factoring and using the zero product property. x^2 - 8x + 30 = 3x

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?