Apiece of construction paper has a thickness of 4.3 x 10-3 inches. a piece of cardstock has thickness of 5.2 x 10-3 inches. how tall is a stack of 15 sheets of construction paper and 20 sheets of cardstock? write your answer in scientific notation.

  1.685·10^-1 inches

Step-by-step explanation:

To find the total thickness, multiply the thickness of each sheet by the number of sheets and add the values for the different kinds of sheets:

  (15)(4.3·10^-3) +(20)(5.2·10^-3) = (64.5 +104.0)·10^-3 = 168.5·10^-3

  = 1.685·10^-1 . . . inches

the image of (6, 9) under a dilation is (4, 6). the scale factor is

c

step-by-step explanation: