Is 11.47723 rational or irrational?

Which is the equation of a line perpendicular to the line with the equation 3x+4y=8

Which best explains why this triangle is or is not a right triangle ?

Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar.a city water tank holds 20 gallons of water. a technician empties 25% of the tank. how many more gallons of water must be removed from thetank so that it has 5 of the water that it started with: the technician must removemore gallons of water for the tank to have 5 of the water that it started with.