An article in Concrete Research ("Near Surface Characteristics of Concrete: Intrinsic Permeability," Vol. 41, 1989), presented data on compressive strength x and intrinsic permeability y of various concrete mixes and cures. Summary quantities are n = 14, Ey; = 572, y = 23,530, Ex = 43, Ex? = 157.42, andEx;y, = 1697.80. Assume that the two variables are related according to the simple linear regression model.

Q: (-14) + (–7)

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Q: 1.25a +3> 0.5a-6 and 2.5a 129-1.5a

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Q: xp xペ-4xt13

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Q: +–3m+–9m+4+5+–10m

A: The expression is given as 1+–3m+–9m+4+5+–10m. Simplifying the given expression. 1+–3m+–9m+4+5+–10m…

Q: 18) 2x y

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Q: Evaluate. (3- 5)² + 4(1 – 5)

A: Given, (3-5)2 + 4(1-5)

Q: Find the LU factorization of A = A = 1 1 -3 0 9 3 -17 5 2

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Q: 2070 = (16a + 10)15

A: 2070 = (16a+10)15 And (16e+11)17 =3723 To find  the values of a and e

Q: 36-9z

A: Given that:36-9z

Q: 1 + 2n < n° for all integers n² 2

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Q: Evalvate S (4sin co) -8cos co) )do

A: Given that: ∫0π(4sinθ-8cosθ)dθ

Q: –4(–6m – 7).

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Q: Z4×Z6 has an element of order 24. true or false ?

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Q: -96 6 -7 A = -3 d 4A.

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Q: (2n)! 323. 2n

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