Answer:
The simplified form of r^-7 + s^-12 is ----> 1/r^7 + 1/s^12
Step-by-step explanation:
Yea they are cuz they have the same side and angle measurements
The quantity remaining will be
.. 448*(1/2)^(24/6) = 448/16 = 28 . . . . grams
Try 9:2 and 3:1 but I'm not sure if that's right or not