MAT 151 Maricopa Community College Algebra Chapter 6 Test

Please show all work when doing the work,

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College Algebra
Chapter 6 Test
St. Amand
Name___________________________
April 29, 2020
Show all work in a neat organized manner using pencil. Place answers on the line
provided.
1. Solve the following system using matrices. You must clearly indicate your row
operations. Write your answer as an ordered triple
𝑥 + 2𝑦 + 3𝑧 = 0
{ 2𝑥 + 2 − 3𝑧 = −4
−3𝑥 + 4𝑦 + 6𝑧 = 10
1.________________________________
2. Set up the partial fractions needed to decompose the following ratio. Do NOT solve.
5𝑥+4
(𝑥+4)(𝑥−3)2 (𝑥 2 +3)3
2._________________________________
3. Four cheeseburgers and two shakes cost a total of $10.74. Two shakes cost $0.29
more than one cheeseburger. Define unknowns, solve your system and find the cost
of one shake.
Define unknowns precisely:
System and work to solve your system:
3._________________________________
4. Find the partial fraction decomposition for
𝑥+3
and show your check
(𝑥−1)(𝑥 2 +3)
4.__________________________________
CHECK:
5. Solve the following non-linear system of equations using the method of your choice.
𝑥 2 + 𝑦 2 = 10
{
𝑥𝑦 = 3
5.__________________________________

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