A coin is tossed 3 times . Suppose that the random variable X is defined as the number of tails . Find the standard deviation for the number of tails

Solve |x| > -9 a) {x|x< -9 or x> 9} b) all reals c) no solution

Fine the area of the kite. a. 90 sq. units b. 9 sq. units c. 180 sq. units d. 45 sq. units

Need to increase the numbers of customers i talk to daily by 20% how many customers do i need to talk to if i talk to a average of 8 customers per hour during an 8 hour shift