Mathematics, 23.08.2019 04:10 bryamp4268
A) let x be the set of all 3 x 3 matrices whose diagonal entries are all o. with the usual matrix addition and scalar multiplication, is x a vector space? (b) let y be the set of all 3 x 3 matrices whose diagonal entries add up to 0. with the usual matrix addition and scalar multipli- cation, is y a vector space? (e) let z be the set of all polynomials of degree exactly 5. is z a vector space?
(d) let v be the set of all 3 x 3 matrices whose determinant is equal to 0. with the usual matrix addition and scalar multiplication, is v a vector space? (e) let w be the vector space of all lower triangular 4 x 4 matrices what is the dimension of w?
Answers: 3
Mathematics, 21.06.2019 17:00
Two streets intersect at a 30- degree angle. at the intersection, the are four crosswalks formed that are the same length. what type of quadrilateral is formed by the crosswalks?
Answers: 3
Mathematics, 21.06.2019 22:20
(b) suppose that consolidated power decides to use a level of significance of α = .05, and suppose a random sample of 100 temperature readings is obtained. if the sample mean of the 100 temperature readings is x⎯⎯ = 60.990, test h0 versus ha and determine whether the power plant should be shut down and the cooling system repaired. perform the hypothesis test by using a critical value and a p-value. assume σ = 5. (round your z to 2 decimal places and p-value to 4 decimal places.)
Answers: 2
Mathematics, 22.06.2019 00:30
Three friends are comparing the prices of various packages of golf balls at a sporting goods store. hector finds a package of 6 golf balls that costs $4.50.
Answers: 3
A) let x be the set of all 3 x 3 matrices whose diagonal entries are all o. with the usual matrix ad...
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