Answers by Johann Heinzelreiter
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Answers by Johann Heinzelreiter

Answers by Johann Heinzelreiter
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A square matrix A E Rn is said to be skew-symmetric if A =-A Prove that if A is skew-symmetric, then x'Ax = 0 for all x E R". (Hint The T T T quantity x'Ax is scalar so that (x'Ax) = x'Ax)
answered May 27, 2020
1 vote
135k views
Ravi wants to earn at least $30 trimming trees. He charges $7 per hour and pays $5 in equipment fees. What are the possible numbers of hours Ravi could trim trees? Answer as an inequality solved for t
answered May 16, 2020
3 votes
119k views
Please help me please
answered Feb 15, 2020
3 votes
206k views
Whose unexpected reaction after one of George Whitefield's sermons demonstrated how powerful Whitefield's preaching style was? A. The New Light preacher Jonathan Edwards wept during Whitefield's sermon
answered Aug 24, 2019
5 votes
111k views
hello hello the area of a triangle is 32 square in the height of the triangle is 8 in what is the length of the base of a triangle
answered Mar 1, 2019
3 votes
93.9k views
Why are there questions at the beginning of this essay? to get the readers' attention and make them interested in reading further to give the readers something to research before they read on to avoid
answered Jan 23, 2019
0 votes
220k views
The condition in which atherosclerosis occurs in the heart's main blood vessels is called __________.
answered Jan 15, 2019
4 votes
16.3k views
Why do media producers use charts and graphs?
answered Oct 23, 2018
4 votes
2.4k views
What should you do when you see questions about a text in this course?
answered Sep 1, 2018
4 votes
170k views
Solutions of the inequalities: 2(b-8)>12
answered Jul 17, 2018
2 votes
99.4k views
You are shopping for groceries, and you can choose between cereal and oatmeal. Which is better for your nutrition?
answered Jul 10, 2018
4 votes
196k views
identify the artistic style being described the artists made art out of the elements of art itself line color shapes light and texture and their artwork did not include identifable objects
answered Feb 21, 2018
1 vote
152k views
What is a subordinating conjuction
answered Feb 10, 2018
2 votes
166k views
Ramona had 8 3/8 in. of ribbon. She used 2 1/2 in. for an art project.How many inches of ribbon does she have left?
answered Dec 6, 2017
6 votes
67.5k views
Alfred Meyer used the term __________ to identify a collection of cities that grow across the land.
answered Oct 29, 2017
1 vote
218k views
What type of sentence is this: Richard gave me one of his extra-rotten, weasel-eyed,greeny-toothed grins. Is it simple, compound or complex? And does it contain an adjectives?
answered May 12, 2017
4 votes
184k views
A student collects a sample of gas and finds that 1.01 g of the gas will fill a container with a volume of 0.225 L at STP. What is the molar mass of the gas?
answered May 2, 2017
5 votes
92.1k views
_______is the process of including units of measurement factors in computation
answered Feb 26, 2017
1 vote
77.3k views
What's b over 2a plus b over 2a? I'm doing rational expressions
answered Nov 21, 2016
2 votes
129k views
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