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44 Cards in this Set
- Front
- Back
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Not Possible
2x3 matrix times 2x2 matrix cannot be done. |
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x = 2
y = -1 |
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x = -1
y = 1 |
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Not possible
3x3 cannot multiply a 2x2 |
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-5
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Write a 2x2 identity matrix
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The identity matrix
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You can purchase peanuts for $3 per pound, almonds for $4 per pound and cashews for $8 per pound. You want to create 140 pounds of a mixture that costs $6 per pound. If twice as many peanuts are used than almonds, how many pounds of each type should be used?
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40 lb of peanuts
20 lb of almonds 80 lb of cashews |
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Tickets to the spring concert cost $3 for students and $5 for adults. Sales total $1534. Twice as many adult tickets as student tickets were sold. Use matrix math to determine how many adult tickets were sold.
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236
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The men’s and women’s swim team is submitting their request to their sponsor. They will need swim suits, swim caps and towels. The women will need 20 suits, 35 swim caps and 40 towels. The men will need 15 suits, 20 swim caps and 30 towels. The cost of the suits is $60. Swim caps are $5 and towels cost $15. Use matrix math to determine the total cost for each team’s supplies.
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Women's = $1,975
Men's = $1,450 |
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Write the coefficient matrix for this system of equations:
2x + 3y = -4 3x - 5y = 9 |
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Write the constant matrix for this system of equations:
2x + 3y = -4 3x - 5y = 9 |
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Solve the system using matrix math:
2x + y + 2z = -15 3x + 3y + z = -15 x + 3y + z = 5 |
(-10, 5, 0)
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Show how to solve the system of equations by graphing. Check your answer.
x - 2y = 0 x + y = 6 |
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Solve the system of equations algebraically (either by elimination or substitution)
y = -4x - 5 y - 5x = -14 |
(1,-9)
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Solve the system of equations algebraically (either by elimination or substitution)
3x + 4y = 12 y = -3/4x + 3 |
infinite solutions
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Solve the system of equations algebraically (either by elimination or substitution)
2x + 3y = 4 6x + 9y = -10 |
no solution
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Graph the system of inequalities
x + y < -5 x - y > 1 |
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Find the vertices of the enclosed region.
y = -18x + 9 y = 9 y = 3 x = 3 |
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Sketch a quadratic function with the following characteristics:
a is positive b is not equal to zero c is positive |
The graph will be a parabola with a minimum (smiley face), NOT centered around the y-axis with a y-intercept greater than 0.
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A has no solutions
B has one solution C has two solutions |
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Write a quadratic equation in standard form with roots 7 and 2
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(x - 8)(x - 8) = 0
x = 8 |
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5x(x - 3) = 0
x = 0, x = 3 |
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(x + 9)(x - 11) = 0
x = -9, x = 11 |
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(x + 2)(2x + 1) = 0
x = -2, x = -1/2 |
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9i
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Simplify (6 - 8i) + (5 + 9i)
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11 + i
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Simplify (4 - 3i) - (-5 + 8i)
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9 - 11i
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Simplify (3 + 2i)(6 + 3i)
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12 + 21i
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x = i
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-1 - i
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