Visible light has wavelengths between approximately 400 nanometers and 700 nanometers. Write an absolute value equation
that represents the minimum and maximum wavelengths in
nanometers. Use x to represent the wavelengths.

The difference of 2 numbers is 21 and the quotient of the equation is 4 then what are the two numbers?

Jeffery conducted a survey in his school and found that 30 of the 50 eighth grade students' favorite subject is mathematics. based on the results, jeffery concluded that out of the 200 students in his school, 120 students' favorite subject is mathematics. select the statement that is true about jeffery's conclusion. a. jeffery's conclusion is not valid because the sample was biased since only 200 students were surveyed. b. jeffery's conclusion is valid because the sample was random since all of the students were eighth grade students. c. jeffery's conclusion is valid because the sample was random. d. jeffery's conclusion is not valid because the sample was biased since all of the students were eighth grade students.

Acredit card advertises an annual interest rate of 23%. what is the equivalent monthly interest rate?