Answer:
9>0.9>0.7>-18/36
Step-by-step explanation:
the smallest would be -18/36.
now we have 9,9/10,28/40
simplify 9/10: 0.9
simplify 28/40: divide 28 and 40 by 4. you will have 7/10 which is equal to 0.7.
now the greatest number is 9,then 0.9 and then 0.7
if anything is unclear, ask freely.
All 3 angles have to add up to be 180 so the answer would be 90
