For your fundraiser, you decide to hold a bake sale. in order to make bakery items, you had to purchase 12 pounds of sugar and 15 pounds of flour. your total cost was $9.30. on a second trip to the grocery store, you purchased 4 pounds of sugar and 10 pounds of flour for a total cost of $4.60. which of the following represent the system of equations for this problem.

Solve the equation using the given values: x= -2.5; y= -7.51. 2xy + 2x²

With this question substitute t=3 and t=5 to determine if the two expressions are equivalent. 4(t + 3) 4t+12 which statements are true? check all that apply. a. the value of both expressions when t =5 is 32. b. the two expressions are not equivalent. c. the value of both expressions when t=3 is 15. d. the value of both expressions when t=5 is 23. e. the two expressions are equivalent. f. the value of both expressions when t=3 is 24.

Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.