A matrix is given. 1 0 0 2 0 1 0 1 0 0 1 4 (a) Determine whether the matrix is in row-echelon form. Yes No Correct: Your answer is correct. (b) Determine whether the matrix is in reduced row-echelon form. Yes No Changed: Your submitted answer was incorrect. Your current answer has not been submitted. (c) Write the system of equations for which the given matrix is the augmented matrix.

Ascientist has 50 grams of a radioactive element. the amount of radioactive element remaining after t days can be determined using the equation (1) after two days the scientist receives a second shipment of 50 grams of the same element. the equation used to represent the amount of shipment 2 remaining after t days is 10) - 50 which of the following is an equivalent form of the expression for the amount remaining in shipment 2? what’s the answer?

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2 acellus answer

Apasta salad was chilled in the refrigerator at 35° f overnight for 9 hours. the temperature of the pasta dish dropped from 86° f to 38° f. what was the average rate of cooling per hour?