x = -4, so use the first equation, x^2 = -4^2 = -16
x = 4, use 3rd equation, sqrt(x) = sqrt(4) = 2
Answer:
0.28 is a decimal and 28/100 or 28% is the percentage for 7/25.
Step-by-step explanation:
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25x4=100
7x4=28
28/100
0.28
28%