Provide an appropriate response.Explain how the multiplication and addition principles are used in solving systems of equations using the elimination method.
What will be an ideal response?
The multiplication principle might be used to obtain a pair of terms that are opposites. The addition principle is used to eliminate a variable. Once a variable has been eliminated, the multiplication and addition principles are also used to solve for the remaining variable and, after a substitution, are used again to solve for the variable that was eliminated.
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Solve the system by graphing. Check the coordinates of the intersection point in both equations.
A. {(5, 2)} B. {(-5, 2)} C. {(x, y) ? 2x + y = -8} D. ?
Work the application and answer with a complete sentence.A company rents a mid-size car at $309 per month for nine months. What is the cost for the car rental during this time?
A. The rental cost is $2781. B. The rental cost is $2730. C. The rental cost is $318. D. The rental cost is $2813.
Express the number in scientific notation.0.000315
A. 3.15 × 10-3 B. 3.15 × 104 C. 3.15 × 10-4 D. 3.15 × 10-5
Solve the problem.Find the area A of a rectangle with length 3.3 cm and width 9.3 cm.
A. A = 30.69 cm2 B. A = 13.2 cm2 C. A = 12.6 cm2 D. A = 61.38 cm2