Answer:
r = 5sec(θ)
Step-by-step explanation:
The usual conversion is ...
y = r·sin(θ)
x = r·cos(θ)
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The second of these can be used here.
r·cos(θ) -5 = 0
r·cos(θ) = 5
r = 5/cos(θ) = 5sec(θ)
A suitable polar equation is ...
r = 5sec(θ)
Hanna bought 85 candies and ate 20 of them. How many candies are left?
Translation?
Let x be the number.
x+4-(-8)
Solve?
x+12
First 42/78% to get 1% then multiply the number by 100% to get around 53 11/13