Answer:
OR
x=\frac{3}{4} ±i\frac{\sqrt{39}}{4}\\
Step-by-step explanation:
D.16.5m
because circumference=21/7×5.25
=16.5m
Answer: y - 4x = 9 <em>in standard form is</em> -y + 4x = -9
7.5%
86 - 80 / 80 = 0.075
so 7.5%