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Solve the system of equations by any method. -2x + 5y = -42 7x + 2y = 30 Enter the exact answer as an ordered pair, (x, y). If there is no solution, enter NS. If there is an infinite number of solutions, enter the general solution as an ordered pair in terms of c. Include a multiplication sign between symbols. For example, a * x.Solve the system of equations by any method. 5$+9y =15 at+2y=5 Enter the exact answer as an ordered pair. (at, y). If there is no solution. enter NS. If there is an innite number of solutions, enter the general solution as an ordered pair in terms of 3:. Include a multiplication sign between symbols. For example. a * :13. Solve the system of equations by any method. a:*+2y= 1 3363;:4 Enter the exact answer as an ordered pair, (as, 3;). If there is no solution. enter NS. If there is an infinite number of solutions, enter the general solution as an ordered pair in terms of 3:. Include a multiplication sign between symbols. For example. a * at. Solve the system of equations by any method. 3:e + 12y: 9 3343;: 3 Enter the exact answer as an ordered pair. [3, :9). If there is no solution. enter NS. If there is an innite number of solutions, enter the general solution as an ordered pair in terms of 3. Include a multiplication sign between symbols. For example. a * at. Afast-food restaurant has a cost of production 0 (3;) = 113: + 105 and a revenue function R (at) = 6.1:. When does the company start to turn a profit? Enter the exact answer. If there is no solution, enter NS. If there is an infinite number of solutions. enter IS. Use a system of linear equations with two variabies and two equations to solve. A number is 11 more than another number. Twice the sum of the two numbers is 42. Find the two numbers. Enter the numbers in increasing order. First Number: Second Number: Use a system of linear equations with two variables and two equations to solve. 304 students enrolled in a 'eslnnanlevel ChellllStl'jF class. By the end of the semester. 7 times the number of students passed as failed. Find the number of students who passed. and the number of students who failed. Passing Students: Failing Students: Determine whether the given ordered triple is a solution to the system of equations. 33y20 a: z 8 and (6,,2) :1:y+2 22 Yes, it is a solution. No. it is not a solution. \\._ Solve the system of equations by any method. 3m4y+2z : 19 ll) 23+4y+z=20 {2 2$+3y+5z :23 {3) Enter the exact answer as an ordered triple, {33, y, a}. Hint: There are multiple ways to solve this system of equations. a A strategy is to eliminate one of the variables and end up with 2 equations in 2 variables. a One way to do that is to begin with equation 2 to get 3 : 20 2 as 4 y. - Then substitute 20 2 a: 4 y for z in equations 1 and 3. a You now have 2 equations (the modied equations 1 and 3) in 2 variables (a: and y]. - Solve this smaller system for a: and y and then use a = 20 2 a: 4 y to calculate a. Use the matrices below to perform the indicated operation if possible. If the operation is undefined, enter NA. Hint: To create a matrix in Mobius, click on the icon :!: that has three rows of three dots - it's next to the infinity symbol. Specify the appropriate number of rows (horizontal) and columns (vertical). sin (a) ? 20 + B =Use the matrices below to perform matrix multiplication. 4 12 4 6 5 B = _9 0 12 , C = -2 6 5 9 If the operation is undefined, enter NA. Hint: To create a matrix in Mobius, click on the icon |; that has three rows of three dots - it's next to the infinity symbol. Specify the appropriate number of rows (horizontal) and columns (vertical). ? sin (a) BC =Use the matrices below to perform matrix multiplication. 4 -5 12 B=90 1 D 8 7 11 If the operation is undefined, enter NA. Hint: To create a matrix in Mobius, click on the icon :; that has three rows of three dots - it's next to the infinity symbol. Specify the appropriate number of rows (horizontal) and columns (vertical). sin (a) U ? BD =