The percent of a tomato is 80%
The easiest way, I think, is to convert the mixed number into an improper fraction, then multiply by 3.
3 1/2 = 7/2
7/2 · 3 = 21/2
now just change the improper fraction back to a mixed number by dividing and putting the remainder into fraction form
21/2 = 10 1/2
You could also multiply the whole number by 3 and the fraction by 3, ending up with 9 3/2, but then have to convert the improper fraction into a mixed number
3/2 = 1 1/2
then add the numbers together
9 + 1 1/2 = 10 1/2
either way works, whatever is easiest for you.
cos (90° - x) should be the answer
Coordinates of the final image is 
Point A is (1,3)
Now applying rule
So, after applying rule We get 
Dilates the image centered at the origin with a scale factor of 3 means that multiply coordinate point by 3.
So, after multiplying by 3 . We get final image is
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