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
Oksana_A [137]
2 years ago
10

Given that 4x-y=5 4y-z=7 and 4z-x=18 what is the value of x+y+z

Mathematics
2 answers:
FromTheMoon [43]2 years ago
7 0

Answer:

x + y +z= 10

Step-by-step explanation:

4x - y = 5  ---------(I)

 4y - z = 7 ---------(II)

4z - x = 18 ---------(III)

Add all the three equations,

  4x - y + 4y - z + 4z - x = 5 + 7 + 18

  4x - x  -y + 4y -z + 4z  = 30

              3x + 3y + 3z = 30

Divide the entire equation by 3

               \sf \dfrac{3x}{3}+\dfrac{3y}{3}+\dfrac{3z}{3} = \dfrac{30}{3}

                 x + y + z = 10

mina [271]2 years ago
3 0
Using simultaneous equations,
x=2, y=3, z=5.

Therefore x+y+z
=2+3+5
=10
You might be interested in
Just do b d f h and j​
Andrew [12]

Answer:

b) 1.383

d) 2733

f) 41.429

h) 6317

j) 87.889

Step-by-step explanation:

4 0
3 years ago
Order of operations is defined as _____.
gavmur [86]

Answer: PEMDAS

parentheses

Exponent

Multiplication

Division

Addition

Subtraction

Step-by-step explanation:

8 0
3 years ago
Center: (-2,5), radius:7
Firlakuza [10]

Answer:

(x + 2)² + (y - 5)² = 7²

Step-by-step explanation:

Incomplete question.  I believe you meant, "write the equation of the circle with center at (-2, 5) and radius 7.

That would be:

(x + 2)² + (y - 5)² = 7²

5 0
3 years ago
What does the equation "m=7.50" mean in this situation?
Naddik [55]

Answer:

1. It means that m equals 7.5

2. It means 4.5 plus s equals m

3. It means n times s equals 6

4. It means m plus n times s equals t

Step-by-step explanation:

Source: Just trust me bro

3 0
3 years ago
Pete is standing 4 feet away from a mirror on the ground. Pete is 6 feet tall and can just see the top of the tree in the mirror
Sedaia [141]

Answer:

24ft

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • What is the value of X?
    8·2 answers
  • Numbers that are both larger than –2 and smaller than 3.
    15·2 answers
  • Please help one of my last questions.....
    7·1 answer
  • The sum of -4n and 5n is -82
    7·2 answers
  • Greensboro gets 12 times as many inches of snow as Redville gets. Altoghter, the two towns gets 65 inches of snow.How many inche
    5·1 answer
  • How do I work out this problem
    15·1 answer
  • Screen-printing a batch of shirts requires 3 minutes per shirt in addition to 19.87 minutes of initial set-up time. How long doe
    13·1 answer
  • 11. While on vacation, Santiago wants to go snorkeling.
    10·1 answer
  • Which of the following statements is true about the quadratic function f(x) = ax2 + bx + c?
    14·1 answer
  • ory has designed a special table with a circular cutout in the center to be filled with glass. The radius of the cutout is 7 inc
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!