A number rounded to the nearest hundred thousand is 400,000 the same number rounded to the nearest ten thousand is 350,000 what is the number

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.

Select the margin of error that corresponds to the sample mean that corresponds to each population: a population mean of 25, a standard deviation of 2.5, and margin of error of 5%

Let x = a + bi and y = c + di and z = f + gi. which statements are true?