The formula for the area of a rhombus is a = a equals startfraction one-half endfraction d 1 d 2.d1d2, where d1 and d2 are the lengths of the diagonals.

which are equivalent equations? select two correct answers.

d1 = 2ad2
d1 = d 1 equals startfraction 2 a over d 2 endfraction.
d2 = d 2 equals startfraction d 1 over d2 a endfraction.
d2 = d 2 equals startfraction 2 a over d 1 endfraction.
d2 = 2ad1

Why did the ice arena get so hot after the big game (this is math related google it to find the paper

Four airplanes carrying a total of 400 passengersarrive at the detroit airport. the airplanes carry, respectively,50, 80, 110, and 160 passengers.a) one of the 400 passengers is selected uniformly at random.let x denote the number of passengers that were on theairplane carrying the randomly selected passenger. find var(x)for x as given in the problemb) one of the 4 airplane drivers is also selected uniformly atrandom. let y denote the number of passengers on the chosen driver’s airplane. find var(y) for y as given in the problem

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500