In 2005 the number of federal hazardous waste sites in california was 2 less than twice the number of sides in washington how many hazardous waste sites were there in washington if they're worth 42 such sites in california

What is the length of the unknown leg in the right triangle ?

Need this asap if anyone can i would be very grateful. if you could show workings that would really

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?