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
Agata [3.3K]
3 years ago
7

Solve the following system of equations.

Mathematics
2 answers:
Vesna [10]3 years ago
8 0

Answer:

Step-by-step explanation:

- subtract 3rd from second

2x +3y -3z = -6

2x +2y -z = 0

---------------

0 y -2z = -6

 - multiply first by -2 and assum by second

-2x -2y +8z = 14

 2x +3y -3z = -6

----------------

 0 y +5z = 8

y-2z=-6

y+5z=8

---------- subtract second from first

0 -7z =-14

z=2

y+5z=8

y+5*2=8

y+10=8

y=-2

z=2

y=-2

 x+y -4z=-7

x +(-2) -4(2) = -7

x-2-8=-7

x-10=-7

x=3

x=3

y=-2

z=2

zzz [600]3 years ago
5 0
<span>- subtract 3rd from second
 
2x +3y -3z = -6
2x +2y -z = 0
---------------
 0 y -2z = -6
 
- multiply first by -2 and assum by second
 
-2x -2y +8z = 14
  2x +3y -3z = -6
----------------
  0 y +5z = 8
 
y-2z=-6
y+5z=8
---------- subtract second from first
 0 -7z =-14
z=2
 
y+5z=8
y+5*2=8
y+10=8
y=-2
 
z=2
y=-2
 
x+y -4z=-7
x +(-2) -4(2) = -7
x-2-8=-7 x-10=-7
x=3
 
x=3
y=-2
z=2</span>
You might be interested in
1. Find the compound interest and maturity value if P = P43,000, with a rate of 5% is compounded semi-annually for 6 years.​
Leno4ka [110]

The Answer is that the present value of $100 is $100. Because this $100 dollar is deposited today so the time is equal to zero and when time is zero the value of amount is the value of amount itself.

7 0
2 years ago
WILL GIVE BRAINLIEST ANSWER!!!!!!HELPPPP
Nimfa-mama [501]

Answer: 3 units right 6 units up

Step-by-step explanation:

coordinate B was first (3,3)

then became (6,9)

X axis is 3 which is left and right

Y axis is also 3 which is up and down

right = positive left= negative up=positive down=negative

the math

you have to add 3 to the right to get positive 6

so the coordinates so far are (6,?)

then you need to add 6 on the y axis for the coordinates to be (6,9)

hope this helped

5 0
3 years ago
Activity 2: Match My Real Values! Instruction: Match the quadratic equations in column A with their values in Column B by using
butalik [34]

Answer: WHY MUST I CRYYYYYYY

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Records show that Oliver is typically 10-30 minutes late
Ratling [72]

The percentage of the time will Oliver get a written warning when  he is more than 16 minutes late for his shift at work is 46.7%.

<h3>What is a density curve?</h3>

The density curve is a type or way of representation of numbered distribution data over a graph. Here, the outcomes are continues. The density curve can not be below the x-axis or horizontal line of the graph.

In a density curve,

  • The mean of a density curve is indicated by μ (mu).
  • The standard deviation of a density curve is indicated by Sx.

Records show that Oliver is typically 10-30 minutes late for his shift at work. The distribution for the minutes he is late forms a consistent pattern, which can be graphed as the given uniform density curve.

Oliver will get a written warning if he is more than 16 minutes late for work. The time remain after the 16 minutes is,

t=30-16

t=14 min

Thus, the percentage of the time will Oliver get a written warning is,

p=(14/30)*100

p=46.7 %

Thus, the percentage of the time will Oliver get a written warning when  he is more than 16 minutes late for his shift at work is 46.7%.

Learn more about the density curve here;

brainly.com/question/25334760

#SPJ1

4 0
2 years ago
1) 7 × 8 = 56
Maslowich
What are the directions
3 0
3 years ago
Read 2 more answers
Other questions:
  • Is a redwood tree an autograph or heterotroph?
    14·1 answer
  • Which set of coordinates satisfies the equations 3x - 2y =15 and 4x - y = 20
    15·1 answer
  • Find the least common denominator for these two rational expressions. 3/2n -2/5n
    7·2 answers
  • What is 384.32 in scientific notation
    13·1 answer
  • Jose,jesus y sofia tienen una cometa cada uno. Jose tiene 90m de hilo para elevar su cometa, jesus 196 pies y sofia 2204 pulgada
    14·2 answers
  • Factor the trinomial below.
    12·1 answer
  • An expression with four or more terms is called
    11·1 answer
  • What is the scale factor from figure a to figure b
    13·1 answer
  • What is the product of `4` and `-2x + 3`?
    6·1 answer
  • Pls help !<br>Use a special right triangle to find the exact cosine of a 30° angle.​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!