Use the clues to find the mystery number.
the number has 6 digits.
the total value of the largest digit is 8000.
the digit in the tens place is 2 less than the digit in the hundreds place.
the sum of the digit in the tens place and the digit in the hundreds place is equal to the digit in the thousands place.
the digit in the tenths place has the same value in every place.
the remaining digit is the largest even digit.
what is the mystery number?

Billy plotted −3 4 and −1 4 on a number line to determine that −3 4 is smaller than −1 4 is he correct? explain why or why not?

Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.

If sin(x) = 0 and cos(x) = 1, what is tan(x)?