Answer:
520
Step-by-step explanation:
78 = 15% × (what number)
78/0.15 = (what number) = 520
78 is 15% of 520.
Answer:

then Radias equal to 5.5676
Step-by-step explanation:
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<span>54x^2y - 12x^2y^2
=6x^2y(9 - 2y)</span>