7/9 = 42/54...when 42/54 reduces, it becomes 7/9...so this is proportional because proportions are nothing but equivalent fractions.
u could also check it this way...
12/21 = 15/24
cross multiply
(21)(15) = (12)(24)
315 = 288.....these do not equal and are therefore, not proportionate
440/4 = 300/3
110 = 100....not equal, so not proportionate
120/5 = 88/4
24 = 22.....not proportionate
66/82 = 99/123
0.804 = 0.804.......these are proportional
68/172 = 43/123
0.395 = 0.349......nope, not proportional
D) 61 degrees
the two angles not touching the exterior angle add up to be the exterior angle therefore you plug in each of the answers by adding them to 57 until you get 118
57+61=118
Answer:
-0.7
Step-by-step explanation:
You are subtracting 0.7 from 8. The pattern keeps going
You just divide basicly right?
So like
29/2276=0.01274725
If you have to Estimate you divide whats outside the división box which is 29
Then you divide 29 with the answer which is 0.01274725
Then you answer to that would be 2275.00049 which shows that it is close enough to 2276.
If I'm wrong I'm Sorry but Yeah
