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study help
mathematics
college algebra
Intermediate Algebra 13th Edition Margaret Lial, John Hornsby, Terry McGinnis - Solutions
Graph each system of inequalities. x ≤ 5 y ≤ 4
Evaulate each expression. [8.7]
Write the center-radius form of the circle with the given equation. Give the center and radius.x2 + y2 + 4x + 6y + 9 = 0
Solve. 10q² + 13q = 3
Identify the graph of each equation as a parabola, circle, ellipse, or hyperbola.y2 = 8 - 2x2
Graph each generalized square root function. Give the domain and range. ||
Solve each system using the elimination method or a combination of the elimination and substitution methods. x² + 6y² = 9 4x² + 3y² = 36
Graph each system of inequalities. x = -2 y ≤ 4
Solve each system using the elimination method or a combination of the elimination and substitution methods. 5x²2y² = -13 3x² + 4y² = 39
Write the center-radius form of the circle with the given equation. Give the center and radius.x2 + y2 - 8x - 12y + 3 = 0
Identify the graph of each equation as a parabola, circle, ellipse, or hyperbola.x = y2 + 4
Evaulate each expression.
Solve. 3x² - 3x-2=0
Graph each generalized square root function. Give the domain and range. y = -2- 1 x² 9
Graph each system of inequalities. [ -zx
Solve each system using the elimination method or a combination of the elimination and substitution methods. x² + y² = 41 x² - y² = 9
Write the center-radius form of the circle with the given equation. Give the center and radius.x2 + y2 + 10x - 14y - 7 = 0
Evaulate each expression. 3 [4
Identify the graph of each equation as a parabola, circle, ellipse, or hyperbola.x2 - y2 = 64
Graph each inequality. 4y² ≤ 36-9x² VI
Solve each system using the substitution method. ху xy=-5 2x+y=3
Write the center-radius form of each circle described. Then graph the circle. Center: (0, 0); radius: 3
Graph each function. Give the domain and range. f(x)=√x + 3-3
Perform the indicated operations. 4√16-2√54
Graph. x-y≤2 x + 3y > 6
Graph each equation. x² y² 16 9 + = 1 ||
Graph. x² + 25y² ≤ 25 x² + y² ≤9
Solve each system using the substitution method. xy=-3 ху x + y = -2
Graph each equation. x² y + 49 25 || 1
Write the center-radius form of each circle described. Then graph the circle. Center: (-3, 2); radius: 3
Graph each inequality. x = y² + 6y-7
Graph each function. Give the domain and range. f(x)=√x-2+2
Graph each inequality. x = y² 8y + 14
Perform the indicated operations. 5 + 3i 2-i
Graph each function. Give the domain and range. f(x) = x - 3| +1
Graph each equation. x² 16 y² 25 = 1
Solve each system using the substitution method. xy = 12 x + y = 8
Factor. 12x² - 7x - 10
Write the center-radius form of each circle described. Then graph the circle. Center: (1, -3); radius: 4
Identify the graph of each equation as a parabola, circle, ellipse, or hyperbola, and then sketch the graph.x2 + 9y2 = 9
Solve each system using the substitution method. y = 3x² + 6x y=x²-x-6
Write the center-radius form of each circle described. Then graph the circle. Center: (4, 3); radius: 5
Graph each equation. y? 25 x2 4 1
Factor. 24 - 1
Solve each system using the substitution method. y = 2x² + 1 y = 5x² + 2x - 7
Graph each inequality. 25x² ≤ 9y² + 225
Identify the graph of each equation as a parabola, circle, ellipse, or hyperbola, and then sketch the graph.x2 - 2y = 0
Graph each function. Give the domain and range. f(x) = x + 1 - 4
Write the center-radius form of each circle described. Then graph the circle. Center: (-3, -2); radius: 6
Graph each equation. f(x)=√16 - x²
Graph each inequality. y² - 16x² ≤ 16 <
Write the center-radius form of each circle described. Then graph the circle. Center: (-2, 0); radius: V5
Identify the graph of each equation as a parabola, circle, ellipse, or hyperbola, and then sketch the graph.x2 = 4y - 8
Graph each generalized square root function. Give the domain and range. f(x) = V16x²
Factor. a³ - 27b³
Match each equation of a hyperbola in Column I with the appropriate intercepts in Column II. (a) (b) (c) (d) 25 9 y² 25 y² 9 - T - - 9 y² 25 9 25 || = || 11 1 1 1 II A. (-3,0), (3, 0) B. (0, -3), (0, 3) C. (-5,0), (5,0) D. (0, -5), (0, 5)
Solve each system using the substitution method. 2x² - y² = 6 y=x²-3
Graph each system of inequalities. 2x + 5y < 10 x - 2y < 4
Henry and Lawrence want to clean their office. Henry can do the job alone in 3 hr, and Lawrence can do it alone in 2 hr. How long will it take them if they work together? Henry Lawrence Rate -13 3 Time Working Together Fractional Part of the Job Done
Identify the graph of each equation as a parabola, circle, ellipse, or hyperbola, and then sketch the graph.y2 = 4 + x2
A student incorrectly evaluated [3.75] as 4. Evaluate correctly.
The nonlinear inequalityis graphed in the figure. Only the right half of the interior of the circle and its boundary is shaded because of the restriction that x must be nonnegative. Graph each nonlinear inequality with the given restrictions. x² + y² ≤ 4, x ≥ 0
Solve each system using the elimination method or a combination of the elimination and substitution methods. x² + xy + y² = 15 x² + y² = 10
A circle can be drawn on a piece of poster board by fastening one end of a string with a thumbtack, pulling the string taut with a pencil, and tracing a curve, as shown in the figure. Why does this method work?
Graph each step function. f(x) = [x] - 1
An ellipse can be drawn on a piece of poster board by fastening two ends of a length of string with thumbtacks, pulling the string taut with a pencil, and tracing a curve, as shown in the figure. Why does this method work?
Graph each inequality. 9x² 16y² + 144 AI
The nonlinear inequalityis graphed in the figure. Only the right half of the interior of the circle and its boundary is shaded because of the restriction that x must be nonnegative. Graph each nonlinear inequality with the given restrictions. x² + y² ≤ 4, x ≥ 0
Solve each system using the elimination method or a combination of the elimination and substitution methods. 2x² + 3xy + 2y² = 21 x² + y² = 6
Graph. f(x) = 2(x - 1)² + 3 2
Graph each inequality. 4x² + y² ≥ 16
The nonlinear inequalityis graphed in the figure. Only the right half of the interior of the circle and its boundary is shaded because of the restriction that x must be nonnegative. Graph each nonlinear inequality with the given restrictions. x² + y² ≤ 4, x ≥ 0
Graph. x² 25 + y² 16
Graph each step function. f(x) = [x] + 1
Graph each inequality. y
Graph each ellipse. 1호 y2 9 25 + 1
Graph. f(x)=√x-2
Solve each system using the elimination method or a combination of the elimination and substitution methods. x² + xy = y² = 11 x² - y² = 8
The nonlinear inequalityis graphed in the figure. Only the right half of the interior of the circle and its boundary is shaded because of the restriction that x must be nonnegative. Graph each nonlinear inequality with the given restrictions. x² + y² ≤ 4, x ≥ 0
Suppose that postage rates are $0.55 for the first ounce, plus $0.24 for each additional ounce, and that each letter carries one $0.55 stamp and as many $0.24 stamps as necessary. Graph the function y = p(x) = the number of stamps on a letter weighing x ounces. Use the interval (0, 5]. Number of
Solve each system using the elimination method or a combination of the elimination and substitution methods. x² + xy - y² = 29 x² - y² = 24
The nonlinear inequalityis graphed in the figure. Only the right half of the interior of the circle and its boundary is shaded because of the restriction that x must be nonnegative. Graph each nonlinear inequality with the given restrictions. x² + y² ≤ 4, x ≥ 0
Graph each ellipse. x2 l 9 ye 16 = 1
Graph each ellipse. x² y² + 36 16 1
The cost of parking a car at an airport hourly parking lot is $3 for the first half-hour and $2 for each additional half-hour or fraction thereof. Graph the function y = ƒ(x) = the cost of parking a car for x hours. Use the interval (0, 2]. Dollars y 9 نرا 3 0 1 2 3 Hours 4 X
Solve each system using the elimination method or a combination of the elimination and substitution methods. = 3x² + 2xy - 3у² = 5 -x² - 3xy + y2 = 3
The nonlinear inequalityis graphed in the figure. Only the right half of the interior of the circle and its boundary is shaded because of the restriction that x must be nonnegative. Graph each nonlinear inequality with the given restrictions. x² + y² ≤ 4, x ≥ 0
Graph each system of inequalities. 2x + 5y = 10 3x - y = 6 ys
Graph. x² 4 y² 16 || 1
Graph. f(x) = 3x
Graph each system of inequalities. 9x² ≤ 4y² + 36 x² + y² ≤ 16
Total rental cost in dollars for a power washer, where x represents the number of hours with x > 0, can be represented by the functionFind the cost of a 7 1/2-hr rental. f(x) = 12[x] + 25.
The nonlinear inequalityis graphed in the figure. Only the right half of the interior of the circle and its boundary is shaded because of the restriction that x must be nonnegative. Graph each nonlinear inequality with the given restrictions. x² + y² ≤ 4, x ≥ 0
Graph each ellipse. x2 9 + yz 4 = 1
Solve each system using the elimination method or a combination of the elimination and substitution methods. -2x² +7xу - 3у2 = 4 = = 2х² - 3xу + 3у2 = 4
Which one of the following is a description of the graph of x2 + y2 > 4?A. The region inside a circle with radius 4B. The region outside a circle with radius 4C. The region inside a circle with radius 2D. The region outside a circle with radius 2
The nonlinear inequalityis graphed in the figure. Only the right half of the interior of the circle and its boundary is shaded because of the restriction that x must be nonnegative. Graph each nonlinear inequality with the given restrictions. x² + y² ≤ 4, x ≥ 0
Graph each system of inequalities. x+y=-2 y
Graph each ellipse. x² 16 + 1² y 4 = 1 ||
The area of a rectangular rug is 84 ft2 and its perimeter is 38 ft. Find the length and width of the rug. L 11 A = 84 ft² P = 38 ft W
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