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Answer:
A) 0
B) 1800
C) 23/4
D) 2
E) 125 percents
6) 3642/42
Step-by-step explanation:
21 —(—18) = 21 + 18
21 + 18 = 21 +18
39 = 39
= 39 - 39
= 0
2) 180 x 10
= 1800
3) 7/2 + 19/4
= 7/2 x 2/2 + 19/4 x 1/1
= 14/4 + 19/4
= 23/4
4) As the first five whole numbers are 0, 1, 2, 3, and 4. Mean = (Sum of observations)/(Number of observations) = (0 + 1+ 2 + 3 +4)/5 = 2.
5) 5 / 4 =
125 percent
6) 5/6 x 17/7
= 5/6 x 7/7, 17/7 x 6/6
= 35/42 x 102/42
= 3264/42
Pls mark me as brainliest