Mathematics, 30.11.2019 04:40 1991987

# Let x, y , z be three random variables which satisfy the following conditions: var(x) = 4, var(y ) = 9, var(z) = 16. cov(x, y ) = âˆ’2, cov(z, x) = 3, and y and z are independent. find: (a) cov(x + 2y, y âˆ’ z). (b) var(3x âˆ’ y ). (c) var(x + y + z)

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Country carpets charges $22 per square yard for carpeting, and an additional installation fee of $100. city carpets charges $25 per square yard for the same carpeting, and an additional installation fee of $70

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Which expression is equivalent to 8(k + m) âˆ’ 15(2k + 5m)?

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The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

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Write the fraction 9/50 as a decimal if needed round to the nearest hundredth

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Let x, y , z be three random variables which satisfy the following conditions: var(x) = 4, var(y )...

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