(x +4) * (x -1)
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The early withdrawal fee on this account
250×0.03×(1÷4)=1.875
If you convert the hours to minutes and subtract them you should get correct answer.
P = 2l + 2w
l = 2x
w = x
66 = 2(2x) + 2(x)
66 = 4x + 2x
66 = 6x
/6 /6
11 = x
L = 2x
L = 2(11)
L = 22
W = x
W = 11
Therefore the length is 22ft and the width is 11ft
Answer:
+√[(2 - √3)/4]
Step-by-step explanation:
Here is the complete question
How do you find the exact values of cos(5pi/12) using the half angle formula?
Solution
The half-angle formula is
cos(θ/2) = ±√[(1 + cosθ)/2]
if cos(5π/12) = cos(θ/2) ⇒ θ/2 = 5π/12 ⇒ θ = 5π/6
So, θ = 5π/6 × 180/π = 150°
Cos150 = cos(180 - 30) = -cos30 = -cosπ/6 = -√3/2
So, cos(5π/12) = ±√[(1 + cos5π/6)/2]
= ±√[(1 + (-cosπ/6))/2]
= ±√[(1 - cosπ/6)/2]
= ±√[(1 - √3/2)/2]
= ±√[(2 - √3)/2 ÷ 2]
= ±√[(2 - √3)/4]
Since 5π/12 = 5π/12 × 180/π = 75° which is in the first quadrant, so
cos(5π/12) = +√[(2 - √3)/4]. We ignore the negative answer
