Advanced Math/equations

Advertisement


Question
QUESTION: find the solution given the following:
y-6z=-2x
x-y+z=-10
x+y-z=0

ANSWER: y - 6z = -2x
x - y + z = -10
x + y - z = 0

2x = -10
x = -5

y - 6z = -2(-5)
y - 6z = 10
y = 6z + 10

-5 - 6z - 10 + z = -10
-5z = 5
z = -1

-5 + y + 1 = 0
y = 4

x = -5
y = 4
z = -1

---------- FOLLOW-UP ----------

QUESTION: 2x+y=(1/2)z
2y=-2(x+z)
3x-y+z=16

Answer
2x + y = (1/2)z
2y = -2(x + z)
3x - y + z = 16

2y = -2(x + z)
y = -(x + z)
y = -x - z

2x - x - z = (1/2)z
x = (3/2)z

y = (-3/2)z - z
y = (-5/2)z

3(3/2)z - (-5/2)z + z = 16
(9/2)z + (5/2)z + z = 16
9z + 5z + 2z = 32
16z = 32
z = 2

x = 3
y = -5
z = 2

Advanced Math

All Answers


Answers by Expert:


Ask Experts

Volunteer


Sherman D.

Expertise

I can answer questions dealing in mathematics of all kinds except for Physics and Calculus, but i can answer questions in Pre-Calculus and Chemistry. I can also answer questions in Recipes of all kinds. I can find games cheats/walkthroughs, but i can`t find a specific game online or offline. I can also do history and recipes for alcoholic beverages.

Experience

Mathematics, Recipes, History, and Games.

Education/Credentials
High School graduated. I graduated with honors, and i was in Beta Club for a year and a half.

Awards and Honors
Principle's list and A and B honor roll in high school only.

©2012 About.com, a part of The New York Times Company. All rights reserved.