April 19, 2014


Posted by LimaBeans93 on Sunday, January 29, 2012 at 5:45pm.

1. Solve these systems of equations
a. 3x + 6y + 3z= 3
2x - y + 4z= 14
x + 10y + 8z= -8

b. x + y + 3z= 10
x + 2y + 3z= 4
x + 4y + 3z= -6

2. Solve these systems of equations word problems.

a. A movie theater sold 450 tickets to a movie. Adult tickets cost $8 and children's tickets cost $6. If the theater took in a total of $3,250 from ticket sales, how many of the tickets were adult tickets and how many were children's tickets?

b. Bond A pays interest of 8% per year. Bond B pays interest of 10% per year. You are to invest a total of $100,000 and earn exactly $9,500 interest per year. How much should you invest in Bond A and in Bond B? (round to the nearest cent)

c. At a certain college, all courses are either 3-credit courses or 4-credit courses. Suppose a student has taken 16 course and has 53 credits. How many 3-credit courses and how many 4-credit courses has the student taken?

Answer this Question

First Name:
School Subject:

Related Questions

College Algebra - solve systems of equations by graphing... I get how to graph ...
SCIENCE!! - what are two examples of these four types of systems? Physical ...
college - In general, think of ways that information systems add value to ...
Science - Why do scientists use models of natural systems? a. Scientists use ...
Math - 3x + y = 3 x + y = 2 Solve the systems of equations. Options: x=1/2 y=3 x...
math - how do i solve systems of three equations with elimination??
math - i don't understand what to do.if someone can tell me what to do i can try...
math - Solve the following systems of equations. 3x + 4y = 4 2x + y = 6
math - solve the systems of equations by elimination. 6x-y=18 2x+y=7
Algebra - College intro - I'm having trouble learning "Solving systems of ...