Step-by-step explanation:
<u>A</u><u>.</u><u> </u><u>Line up the decimals, then multiply as you would with whole numbers:</u>

<u>B. Line up the decimals, then add as you would with whole numbers:</u>
Note: These decimals aren't lined up exactly.



X•2+12 I’m not sure if that’s what you’re looking for though
The answer would be 25 because to find the range you have to subtract the highest number with the lowest number which would be 29-25=4
10.68 each for the 2 same length sides. The total of the 5 sides is 45.56 less the 3 sides which total 24.2 leaves 21.36 remaining for the 2 equal length sides. So divide 21.36 by 2 = 10.68
(45.56 - 24.2)/2 = 10.68