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a+b+37 = 6, 2a+2b-32 = 9, a+2b-62= -4

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Two representatives are chosen at random from a group of 180 students that has 90 girls and 90 boys. What is the probability that the representatives selected are either both boys or both girls?

Choices: A.) 90/180 x 89/179 B.) 2/90+2/90 C.)2 x 90/180 x 89/179 D.) 2 x 2/90 x 2/88

Choices: A.) 90/180 x 89/179 B.) 2/90+2/90 C.)2 x 90/180 x 89/179 D.) 2 x 2/90 x 2/88

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Determine the minimum sample size required in order to estimate p, the population proportion, to within 0.05, with:

a) 95% confidence.

b) 99% confidence.

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the lengths of a triangle measure 27, 46 and 67 cm. find the measure of each angle of the triangle

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first derivative and second derivative of f(x)= e^(1/x)

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A walking trail in Stanley Park in Vancouver is 10.8 km long. The Parks Board wants to install benches every 600 m along the trail. The benches cost $350.00 each, and labour will cost $1500.00. How much will it cost to install the benches?

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Antoine needs to buy metal primer to rust proof a cylindrical fuel storage tank. The tank has a diameter of 15 ′ 6 ″ and a height of 18 ′ . A 3.8 L can of metal primer costs $47.13 and covers 40 m 2 . What will be the total cost of the metal primer? (Assume that the bottom of the storage tank will be painted.)

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If the pth term of an H.P. is q the qth term is p , prove that the (p+q)th is pq/p+q

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If y = e^ax cos^3 x sin^2 x find dy/dx

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cosecθ(cotθ+cosecθ)+cosecθ(tanθ+secθ)=2(1+cosecθ+secθ)

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