Answer:
y = (x/(1-x))√(1-x²)
Step-by-step explanation:
The equation can be translated to rectangular coordinates by using the relationships between polar and rectangular coordinates:
x = r·cos(θ)
y = r·sin(θ)
x² +y² = r²
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r = sec(θ) -2cos(θ)
r·cos(θ) = 1 -2cos(θ)² . . . . . . . . multiply by cos(θ)
r²·r·cos(θ) = r² -2r²·cos(θ)² . . . multiply by r²
(x² +y²)x = x² +y² -2x² . . . . . . . substitute rectangular relations
x²(x +1) = y²(1 -x) . . . . . . . . . . . subtract xy²-x², factor
y² = x²(1 +x)/(1 -x) = x²(1 -x²)/(1 -x)² . . . . multiply by (1-x)/(1-x)

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The attached graph shows the equivalence of the polar and rectangular forms.
Answer: Your input has more than one equals sign.
Step-by-step explanation:
divide both sides by a negative one to get ride of the -y then on your graph it be a horizontal line at the point (0,-34)
Answer:
$62.05 for 20 gallons
Sorry if I didn't get it correct. I don't really understand how you worded your question. <3
Step-by-step explanation:
$81 for 25 gallons =
81/25 = $3.24 for 1 gallon
$62.05 for 20 gallons =
62.05 / 20 = $3.10 for 1 gallon
The correct answer is tanx(1-secx)/(1+secx)(1-secx)