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Answer: 0.99
Explanation:
Chance she will use red roses: 98%
Chance she will use orchids: 87%
Chance she will use Gerber daisies: 94%
probability she has both roses and orchids: 0.82
Probability she has both Gerber daisies and roses: 0.97
What is the probability she has Gerber daisies as she has already chosen red roses =?
Probability of having daisies and choosing red roses= Probability of Daisies and roses/ Probability of red roses)
0.97/0.98 = 0.99
P = 2x+2(450-x)=900
A = x(450 - x)
A = x(450 - x)
-x² + 450x = A
-x² +450x = A
A is going to be maximum, when x is a vertex.
-(x² - 450x) = A
-(x² - 2*225x+225²) - 225² =A
-(x-225)² -225² = A
Vertex when x=225
Largest are 225(450-225) = 225² = 50625 ft²
The square has a largest area.
Cos(2θ) = cos²θ - sin²θ = (1-sin²θ)-sin²θ = 1-2(7/9)^2 = -17/81