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Chapter 7 Solutions
College Algebra
- Take this test to review the material in Chapters 4 and 5. After you are finished, check your work against the answers in the back of the book. Write the third column of the matrix as a linear combination of the first two columns if possible. [102422751]arrow_forward(a) Write the following system as a matrix equation AX=B . (b) The inverse of A is (c) The solution of the matrix equation is X=A1B . (d) The solution of the system is x = ____, y = ____.arrow_forwardFind ATA and AAT for the matrix below. What do you observe? A=[132461]arrow_forward
- Use matrix methods to solve each problem Nutritional planning One ounce of each of three foods has the vitamin and mineral content shown in the table. How many ounces of each must be used to provide exactly 22 milligrams mg of niacin, 12 mg of zinc, and 20 mg of vitamin C? Food Niacin Zinc Vitamin C A 1 mg 1 mg 2 mg B 2 mg 1 mg 1 mg C 2 mg 1 mg 2 mgarrow_forwardDetermine the dimension of the matrix 14710238.arrow_forward
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