1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
PolarNik [594]
3 years ago
5

System of Equations Need help Trig

Mathematics
1 answer:
Yanka [14]3 years ago
6 0

Looks like the system is

\begin{cases}-2x+y+6z=1\\3x+2y+5z=16\\7x+3y-4z=11\end{cases}

We can eliminate y by taking

(3x+2y+5z)-2(-2x+y+6z)=16-2(1)

\implies3x+2y+5z+4x-2y-12z=16-2

\implies7x-7z=14

\implies x-z=2

so that z=x-2, and

(7x+3y-4z)-3(-2x+y+6z)=11-3(1)

\implies7x+3y-4z+6x-3y-18z=11-3

\implies13x-22z=8

Substitute z=x-2 into this last equation and solve for x:

13x-22(x-2)=8

\implies13x-22x+44=8

\implies-9x=-36

\implies x=4

Then

z=x-2

\implies z=4-2

\implies z=2

Plug these values into any one of the original equation to solve for y:

-2x+y+6z=1

\implies-2(4)+y+6(2)=1

\implies-8+y+12=1

\implies y=-3

Hence the solution is x = 4, y = -3, and z = 2.

You might be interested in
$12.75 is what percent of $50?
hammer [34]
$12.75 is 25% of $50
7 0
3 years ago
Find the volume of each prism. Round to the nearest tenth if necessary
bekas [8.4K]
The volume is 216 :)
3 0
3 years ago
In the chemistry lab an experiment requires 599 mL of one ingredient to be mixed with 1000 mL of another. How many ounces is the
raketka [301]

Answer:

50.7202

Step-by-step explanation:

(500ml+1000ml) / (29.574 ml per ounce) = 50.72 US Fluid Ounces

3 0
2 years ago
What are two numbers that multiply for 54 and add to give you -3
cupoosta [38]

Answer:

9 and -6 multiply to -54 and add to 3

Step-by-step explanation:

when listing the factors of 54, we can find a pair that add to 3

1, 2, 3, 6, 9, 18, 27 and 54

9 and -6 is the pair.

hope this helps! :D

have a miraculous day, and brainliest is immensely appreciated!! <3

3 0
2 years ago
Determine the range of the graph
VashaNatasha [74]

Answer:

is 20

Step-by-step explanation:

hope this helps

8 0
3 years ago
Other questions:
  • Mira's kitchen sink holds up to 103 468 liters of water. Round this amount to the nearest liter.
    9·1 answer
  • Explain how you would use repeated subtraction to find 8/2
    12·1 answer
  • Find the median of the following data set. 1 1/4, 5/8, 3/5, 1/2, 1 1/2, 1 3/4
    13·1 answer
  • Name the multiplication property shown the equation 12 times m = m times 12
    13·1 answer
  • 1. Which list shows numbers ordered
    15·1 answer
  • the entry fee to the fair is 4.00 . each rides requires a ticket that cost 0.50 heidi spent a total 12.00 how many ticket did he
    7·1 answer
  • Given: angle 1= angle 2<br>If AB=10,AC=6,and BC=6, find AD.<br><br>A.5<br>B.15<br>C.10​
    14·1 answer
  • Solve the system by using the elimination method.
    13·1 answer
  • I have to reduce the fraction 49/35 using factor trees
    8·1 answer
  • Perform the multiplication. Simplify the answers. 2 √30*( √5+ √6+ √10+ √15)
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!