Which of the following statements is true?
a. 15 ÷ 0 = 0
b. 15 – 0 = 0
c. 0 ÷ 15 = 0
d. 15 + 0 = 0

(x-5)1/2+5=2 what is possible solution of this equation

What is the approximate value of  x  in the equation below.–3.396–0.7080.3040.955

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?