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Cramer's Rule — Unit test Answers

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Solve the system of equations by finding the reduced row-echelon form of the augmented matrix for the system of equations.a.c.b.d.

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Tickets to the zoo cost $4 for children, $5 for teenagers and $6 for adults. In the high season, 1200 people come to the zoo every day. On a certian day, the total revenue at the zoo was $5300. For every 3 teenagers, 8 children went to the zoo. How many teenagers went to the zoo? a.100 teenagersc.300 teenagersb.200 teenagersd.400 teenagers

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Write the augmented matrix for each system of equations.a.c.b.d.

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Tickets to a concert cost $2 for children, $3 for teenagers and $5 for adults. When 570 people attended the concert, the total ticket receipts were $1950. Compared to the number of children in attendance, three-fourths as many teenagers attended. How many teenagers attended? a. 200 c. 220 b. 150 d. 316 Please select the best answer from the choices provided

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The row-echelon form of the augmented matrix of a system of equations is given. Find the solution of the system.

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Answer not available
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Which equation can be used to solve for y-value of the solution in the system of linear equations below?

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=
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= 9
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= 9
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=
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The vertices of a triangle are given in the columns of the matrix . If is found to perform a transformation, what are the coordinates of the transformed triangle?

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(0, 0), (–4, 0), (0, –5)
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(0, 0), (–4, 0), (0, 5)
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(0, 0), (4, 0), (0, –5).
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(0, 0), (4, 0), (0, 5).
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What are the values of x and z in the solution to the system of linear equations below?

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James bought two shirts and three pairs of pants for $87. Matthew bought two pairs of pants and one shirt for $53. Assuming each pair of pants costs the same amount and each shirt costs the same amount, how much does one pair of pants cost?

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Option D
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If , then what is –K?

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mc009-2.jpg
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The vertices of a rectangle are given in the columns of the matrix . If is found to perform a transformation, what are the coordinates of the transformed rectangle?

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(0, 0), (0, 18), (18, 18), (18, 0)
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(0, 0), (18, 0), (18, –18), (0, –18)
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(0, 0), (–18, 0), (–18, –18), (0, –18)
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(0, 0), (18, 0), (18, 18), (0, 18)
12

What is the product?

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mc018-5.jpg
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13

Write the augmented matrix for each system of equations.a.c.b.d.

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14

Write the augmented matrix for each system of equations.a.c.b.d.

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15

Lillian borrows $10,000. She borrows some from her friend at 8% annual interest, twice as much as that from her bank at 9%, and the remainder from her insurance company at 5%. She pays a total of $830 of interest for the first year. How much did she borrow from the insurance company?a.$3000c.$6000b.$1000d.$2300

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