Mathematics, 07.03.2020 03:04 BreBreDoeCCx
Question 1 (5 points): Let A be an 20 × 20 matrix. (a) Suppose that A has 20 pivot positions. Does the matrix A−1 exist? Explain your answer. (b) Suppose that the columns of A are linearly independent. How many pivot positions does A have? Explain your answer. (c) Suppose that the columns of A are linearly independent. For which vectors b is the equation Ax = b consistent? Explain your answer. (d) Suppose that A−1 exists. How many solutions are there of the equation Ax = b? Explain your answer? (e) Suppose that A has a free variable. Does A−1 exist? Explain your answer.
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Mathematics, 21.06.2019 22:20
1. 2. ∠b and ∠y are right angles. 3.? 4.? which two statements are missing in steps 3 and 4? ∠x ≅ ∠c △abc ~ △zyx by the sas similarity theorem. ∠b ≅ ∠y △abc ~ △zyx by the sas similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem.
Answers: 2
Mathematics, 21.06.2019 23:00
Afunction, f(x), represents the height of a plant x months after being planted. students measure and record the height on a monthly basis. select the appropriate domain for this situation. a. the set of all positive real numbers b. the set of all integers oc. the set of all positive integers od. the set of all real numbers reset next
Answers: 3
Mathematics, 21.06.2019 23:00
Sara made $253 for 11 hours of work. at the same rate how much would he make for 7 hours of work?
Answers: 2
Question 1 (5 points): Let A be an 20 × 20 matrix. (a) Suppose that A has 20 pivot positions. Does t...
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