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
Westkost [7]
1 year ago
14

solve the following system of equations using substitution x+y+z=7y=32x+y-z=5enter your answer in the form of (x,y,z)

Physics
1 answer:
murzikaleks [220]1 year ago
5 0

Given equations:

x+y+z=7\ldots(1)y=3\ldots(2)2x+y-z=5\ldots(3)

Substitute 3 for y in equation (1);

\begin{gathered} x+3+z=7 \\ x+z=7-3 \\ x+z=4\ldots(4) \end{gathered}

Substitute 3 for y in equation (3);

\begin{gathered} 2x+3-z=5 \\ 2x-z=5-3 \\ 2x-z=2\ldots(5) \end{gathered}

Adding equation (4) and (5);

\begin{gathered} (x+z)+(2x-z)=4+2 \\ x+z+2x-z=6 \\ 3x=6 \\ x=\frac{6}{3} \\ x=2 \end{gathered}

Substitute 2 for x in equation (4);

\begin{gathered} 2+z=4 \\ z=4-2 \\ z=2 \end{gathered}

Therefore, the values of (x,y,z) is (2,3,2).

You might be interested in
The curve below shows the percentage of population of aquatic species that die in response to doses of pollutant A:
Elis [28]

Based on the trend produced by the dose - response graph, it would be best to evacuate the residents in other to prevent the increasing percentage of deaths due to the rising level of pollutant A.

  • The curve shows that the pollutant level in mg/kg of pollutant A is still increasing, hence, groundwater monitoring alone won't be the best decision to make.

  • Since the pollutant level is still increasing, then the spill level still need effective monitoring.

  • Evacuation of residents seems to be the best decision that should be taken based on the information interpreted on the graph.

Therefore, Evacuating residents to prevent rising death percentage is required as the pollutant level is yet to subside.

Learn more :brainly.com/question/24844489

8 0
2 years ago
expain why different atoms of the same element always have the same atomic number but can have different mass numbers what are t
anzhelika [568]
The atomic number tells you the number of protons in an atom. This value never changes because the number of protons in the nucleus always remains constant. The mass number tells you the number of protons and neutrons (or nucleons) together: protons + neutrons = mass number. Since the number of neutrons in the nucleus varies, you can have different amounts of neutrons in the same type of atom. These varied types are called isotopes.

Hope this helps.
4 0
3 years ago
What is the difference between fertilization and pollination
lana [24]
<span>Pollination is when the male gamete or pollen reaches the female flower through different modes...wind,air,animals,... 
Fertilization </span><span>is when the male gamete "join" with the female gamete to become an embryo.
I hope I helped.:) </span>
4 0
3 years ago
The pressure of a gas produces a net force (the sum of all the forces) at ____ angles to the wall of a container.
ivanzaharov [21]

Answer: RIGHT angles

Explanation:

7 0
3 years ago
A fluid is any substance that can flow and take the shape of its container A) true B) false
Tpy6a [65]
Its true...water takes the shape of its container and it flows..please give me 5 stars and brainliest

7 0
3 years ago
Read 2 more answers
Other questions:
  • It takes a slug 20 minutes to travel from the grass to the trash can , a trip of 15 meters. How far could the slug travel in 60
    11·1 answer
  • Why do toasters always have a setting that burns the toast to a horrible crisp, which no decent human being would eat?
    13·2 answers
  • What type of energy is the energy of motion?
    11·2 answers
  • A soccer player applies a force of 48.4 N to a soccer ball while kicking it. If the ball has
    8·2 answers
  • How does the ocean play an important role in climate and climate change? Keep answer related to the specific heat capacity of wa
    15·1 answer
  • Electromagnetic radiation from a 8.25 mW laser is concentrated on a 1.23 mm2 area. Suppose a 1.12 nC static charge is in the bea
    12·1 answer
  • Identify scalar and vector quantities: a. The volume of a petrol tank. b. A length measured in meters. c. The jet taking off aga
    9·1 answer
  • What is the gpe of a 200g ball that is 10m off the ground​
    8·1 answer
  • A 5. 3 ft -ft-tall girl stands on level ground. The sun is 30 ∘ above the horizon. How long is her shadow?
    14·1 answer
  • The following equation, N2 + 3 H2 —&gt;2 NH3 ,describes a
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!