Iwill mark plus 25 pts. a delivery truck is transporting boxes of two sizes: large and small. the large boxes weigh 60 pounds each, and the small boxes weigh 20 pounds each. there are 115 boxes in all. if the truck is carrying a total of 4300 pounds in boxes, how many of each type of box is it carrying?

    50(115-y) + 25y = 4125             [from eq2]

     5750 - 50y  + 25y = 4125           [distribute]

     5750 - 25y = 4125

      -25y = -1625

         y = 65             [divide both sides by (-25)]

 There are 65 small boxes.

Put that value into either equation (now, which is easier?) to solve for x:

  x = 115 - y

  x = 115 - 65

  x = 50

  There are 50 large boxes.

19.side- angle- side

20. angle- side- angle

step-by-step explanation:

i think it is c, not positive though

step-by-step explanation: