Exam 6: Systems of Equations

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In the graph of y \geq 1, x \leq 0 what is the corner point?

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Decide which variable has a coefficient of 1 or -1, and solve for that variable in terms of the other variable. 4xy=174 x - y = 17

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E

Do the graphs of the equations form coincident lines? (It is not necessary to graph them.) 2x+y=4 2y+x=4

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Graph the system of inequalities and show the solution set. {yx1y2x2\left\{ \begin{array} { l } y \leq - x - 1 \\y \geq 2 x - 2\end{array} \right.

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Identify two appropriate variables, and use the variables to write equations. Use either the elimination method or the substitution method to solve the equation The sum of two numbers is 4040 . There difference is 66 . Find the numbers.

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Do the graphs of the equations form coincident lines? (It is not necessary to graph them.) y=x+0.04x y=1.04x

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A parallelogram has angles A and B as supplementary angles. The measure of angle A is 74 degrees more than angle B. What is the measure of angle A?

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Which ordered pairs satisfy the system of inequalities given? y\leqx+4 y\geqx-4

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Which ordered pairs satisfy the system of inequalities given? y\leq-x-4 y\geqx

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Solve by substitution: 5x-5y=-5 4x+2y=20

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Nerine combines walking (at 6 km/hr) and running (at 18 km/hr) in her fitness program. Last week she exercised a total of 10 hours and traveled 108 kilometers. How many hours did she walk?

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Write a system of equations to describe the problem situation. It is not necessary to solve the problem. Nancy has $3.50. She has only dimes (x) and quarters (y). She has 30 coins altogether.

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Solve 10 = m(4) + b for m.

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Solve by the elimination method: 2x-4y=6 5x+5y=-15

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Write a system of equations to describe the problem situation. Use guess and check to solve the problem. A boat travels 20 miles downstream in an hour. While its passengers are fishing, the tide comes in. The tidewater reaches 20 miles upstream. The trip home on still water take 1 14\frac { 1 } { 4 } hours. Find the speed of the current, c.

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Write a system of equations that will solve the problem. It is not necessary to solve the problem. Alexandra works for two clients during one month. She works a total of 180 hours during the month. She works 50 hours more for one client (y) than for the other (x).

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In the graph of x < 1, y \geq -2, what is the corner point?

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A right triangle has angles A and B as complementary angles. The measure of angle A is 8 more than the measure of angle B. What is the measure of angle A?

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To cut costs, the new manager at Healthy Options wants to mix 4,000 pounds of cat food. The mixture is to have 10% protein. The first ingredient contains 8% protein. The second has 13% protein. How many pounds of the 8% protein ingredient is needed?

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Graph the system of Inequalities and show the solution set. Label the corner point. y>5x-5 y<2x-2

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