Unit 2 Homework Assignment (3.1, 3.2) Please use the attached file. Thank you! 1. ?/1 pointsBerrFinMath1 3.1.001.
Question:
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Unit 2 Homework Assignment (3.1, 3.2)
Please use the attached file. Thank you!
1. ?/1 pointsBerrFinMath1 3.1.001. Solve the system by graphing. (Enter your answers as a commaseparated list. If the system is inconsistent, enter INCONSISTENT. If the
system is dependent, enter DEPENDENT.) x+y=4
x?y=2 (x, y) =
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2. ?/1 pointsBerrFinMath1 3.1.002. Solve the system by graphing. (Enter your answers as a commaseparated list. If the system is inconsistent, enter INCONSISTENT. If the
system is dependent, enter DEPENDENT.) x+y=8
?x ? y = ?8 (x, y) =
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3. ?/1 pointsBerrFinMath1 3.1.003. Solve the system by the elimination method. (Enter your answers as a commaseparated list. If the system is inconsistent, enter
INCONSISTENT. If the system is dependent, enter DEPENDENT.) x + y = 13
2x + 3y = 33 (x, y) =
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7/7/2016 Unit 2 Homework Assignment (3.1, 3.2)
4. ?/1 pointsBerrFinMath1 3.1.004. Solve the system by the elimination method. (Enter your answers as a commaseparated list. If the system is inconsistent, enter
INCONSISTENT. If the system is dependent, enter DEPENDENT.) 3x + y = 26
x + 2y = 17 (x, y) =
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5. ?/1 pointsBerrFinMath1 3.1.006. Solve the system by the elimination method. (Enter your answers as a commaseparated list. If the system is inconsistent, enter
INCONSISTENT. If the system is dependent, enter DEPENDENT.) 2x + 5y = 59
2x + 3y = 45 (x, y) =
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6. ?/2 pointsBerrFinMath1 3.1.008. Formulate the situation as a system of two linear equations in two variables. Be sure to state clearly the meaning of your x and y
variables. Solve the system by the elimination method. Be sure to state your final answer in terms of the original question.
A lawyer has found 60 investors for a limited partnership to purchase an innercity apartment building, with each contributing either $4,000 or $8,000. If the partnership raised $328,000, then how many investors contributed $4,000 and how many contributed $8,000?
x = $4,000 investors y = $8,000 investors
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7. ?/2 pointsBerrFinMath1 3.1.009. Formulate the situation as a system of two linear equations in two variables. Be sure to state clearly the meaning of your x and y
variables. Solve the system by the elimination method. Be sure to state your final answer in terms of the original question.
A jar contains 80 nickels and dimes worth $7.30. How many of each kind of coin are in the jar? x = nickels y = dimes
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7/7/2016 Unit 2 Homework Assignment (3.1, 3.2)
8. ?/2 pointsBerrFinMath1 3.1.010. Formulate the situation as a system of two linear equations in two variables. Be sure to state clearly the meaning of your x and y
variables. Solve the system by the elimination method. Be sure to state your final answer in terms of the original question.
The concession stand at an ice hockey rink had receipts of $6600 from selling a total of 2800 sodas and hot dogs. If each soda sold for $2 and each hot dog sold for $3, how many of each were sold?
x = sodas y = hot dogs
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9. ?/4 pointsBerrFinMath1 3.2.001. Find the dimension of the matrix.
91 85 23
?
Find the values of the specified elements. a1,1 =
a3,2 =
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10.?/4 pointsBerrFinMath1 3.2.002. Find the dimension of the matrix.
?2 3 6 8 ?1 6 8 2 ?5 ?5 6 7
?
Find the values of the specified elements. a2,2 = a3,4 =
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7/7/2016 Unit 2 Homework Assignment (3.1, 3.2)
11.?/6 pointsBerrFinMath1 3.2.003. Find the augmented matrix representing the system of equations.
x + 2y = 9 3x + 5y = 18
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12.?/6 pointsBerrFinMath1 3.2.004. Find the augmented matrix representing the system of equations.
5x ? 4y = 28 x=6
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13.?/6 pointsBerrFinMath1 3.2.006. Carry out the row operation on the matrix.
R1?R2?R1 on
75 57 62 53
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14.?/1 pointsBerrFinMath1 3.2.008. Interpret the augmented matrix as the solution of a system of equations. (Enter your answers as a commaseparated list. If the system is
inconsistent, enter INCONSISTENT. If the system is dependent, enter DEPENDENT.)
107 01 ?4
(x, y) =
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7/7/2016 Unit 2 Homework Assignment (3.1, 3.2)
15.?/1 pointsBerrFinMath1 3.2.009. Interpret the augmented matrix as the solution of a system of equations. (Enter your answers as a commaseparated list. If the system is
inconsistent, enter INCONSISTENT. If the system is dependent, enter DEPENDENT.)
235
001 (x, y) =
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16.?/1 pointsBerrFinMath1 3.2.011. Solve the system by rowreducing the corresponding augmented matrix. (Enter your answers as a commaseparated list. If the system is
inconsistent, enter INCONSISTENT. If the system is dependent, enter DEPENDENT.) 2x + y = 13
x+y=9 (x, y) =
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17.?/2 pointsBerrFinMath1 3.2.014. Express the situation as a system of two equations in two variables. Be sure to state clearly the meaning of your x and yvariables. Solve
the system by rowreducing the corresponding augmented matrix. State your final answer in terms of the original question.
A corn and soybean commodities speculator invested $18,000 yesterday with twice as much in soybean futures as in corn futures. How much did she invest in each?
x = $ invested in corn futures y = $ invested in soybean futures
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7/7/2016 Unit 2 Homework Assignment (3.1, 3.2)
18.?/2 pointsBerrFinMath1 3.2.015. Express the situation as a system of two equations in two variables. Be sure to state clearly the meaning of your x and yvariables. Solve
the system by rowreducing the corresponding augmented matrix. State your final answer in terms of the original question.
For the final days before the election, the campaign manager has a total of $29,000 to spend on TV and radio ca
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