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
arsen [322]
3 years ago
5

2x + y - z = 3 -x + 2y + 4z = -3 x – 2y - 3z = 4

Mathematics
2 answers:
nika2105 [10]3 years ago
7 0

Answer:

x = 3; y = -2; z = 1.

Step-by-step explanation:

-x + 2y + 4z = -3

x – 2y - 3z = 4

(-x + x) + (2y - 2y) + (4z - 3z) = (-3 + 4)

0 + 0 + z = 1

z = 1

x - 2y - 3(1) = 4

x - 2y - 3 = 4

x - 2y = 7

x = 2y + 7

2(2y + 7) + y - (1) = 3

4y + 14 + y - 1 = 3

5y + 13 = 3

5y = -10

y = -2

x = 2(-2) + 7

x = -4 + 7

x = 3

So, your answer is (3, -2, 1).

Hope this helps!

mario62 [17]3 years ago
4 0

Answer:

x=3, y=-2, z=1

Step-by-step explanation:

I solved by substitution

You might be interested in
There are 3,280.84 feet in a kilometer. There are 5,280 feet in a mile. To the nearest hundredth, how many kilometers are in a m
just olya [345]

Answer:

1.609344 kilometers

Step-by-step explanation:

8 0
2 years ago
a right triangle has a hypotenuse with a length of 20. the lengths of the legs are whole numbers. what are the lengths of the le
Y_Kistochka [10]

Answer:

12;16

Step-by-step explanation:

The Pythagorean theorem states that

a^2+b^2=c^2 where a and b are legs of a triangle, and c is the hypotenuse.

This means that we have to find 2 values that once squared, add up to 400. (20^2)

Based on this, we can use the values of 12 and 16 to satisfy this.

12^2+16^2=144*256=400

Therefore, the legs of the triangle are 12 and 16.

5 0
3 years ago
A number card from 1 to 8 is randomly chosen. What is p(5)
Nina [5.8K]
the answer is 1/8. I double checked
7 0
3 years ago
How do you do this?PLZ HELP
Alisiya [41]
3(x^2+10x+5)-5(x-k)=
3x^2+30x+15-5x+5k=
3x^2+25x+15+5k

for this to be divisible by x every term must include x or get eliminated

the problematic terms are 15 and 5k
to eliminate them they must equal 0 when added:
15+5k=0
5k=-15
k=-3

so A) -3 is the solution
5 0
3 years ago
Annie went on a shopping trip to Lexington. Is she purchasing handbag originally priced at $25 but discounted 20%. If sales tax
VikaD [51]

Answer:

$0.05

Step-by-step explanation:

5 0
3 years ago
Other questions:
  • What are the factors of −7? Which two added together equal 6?<br>​
    7·2 answers
  • 16^5+16^4 is divisible by 17
    13·2 answers
  • The U.S. Senate has 100 members. After a certain​ election, there were 16 more Democrats than​ Republicans, with no other partie
    11·1 answer
  • HELP PLEASE THIS IS TIMED BROOOOO
    5·1 answer
  • How to find the area of a square with radius 17 square root 2
    6·1 answer
  • If a company issues bonus shares, what is the most likely effect on its debt-equity ratio?
    15·1 answer
  • The value of y varies directly with x, and y<br> Find y when x = 2.4.<br> 7.2 when x = 1.6.
    15·2 answers
  • Mrs. Stephan took her children to pick out pumpkins. Carter picked out a pumpkin priced $20, and
    7·1 answer
  • What is 54 as a percentage of 216?<br> %
    7·1 answer
  • 1. P, Q and R are three buildings. A car began its journey at P, drove to Q, then to R and returned to P. The bearing of Q from
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!