recklessunreached
03.02.2020 •
Mathematics
Which event has a probability of one?
a. choosing a letter from the alphabet that is a vowel
b, choosing a number that is greater than one and is even
c. choosing a set of parallel lines on a polygon
d. choosing a square that is also a rectangle
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Ответ:
Ответ:
b. 54
Step-by-step explanation:
45 is original perimeter for ABC. You subtract 16 and 9 from 45 to get the missing side B which is 20. To answer the the perimeter for triangle CRB you add 20 to the other sides which is 15 and 19. The total is 54.