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nignag [31]
3 years ago
11

Solve the system of linear equations and check any solution algebraically

Mathematics
2 answers:
Vedmedyk [2.9K]3 years ago
6 0
It is pretty long, hope you understand 
  x+y+z=6
+
  2x-y+z=3
-------------
  3x+2z=9
->3x=9-2z (1)

3x-z=0
3x=z (2)

From (1)+(2)-> z=9-2z
solve for z
-3z=9
z=-3 (3)

plug (3) in (2)
->3x=-3
->x=-1 (4)

Plug (3) and (4) in <span>x+y+z=6
</span>-3+y+(-3)=6
solve for y
y-6=6
->y=12
Answer:
x=-1
y=12
z=-3


andrew-mc [135]3 years ago
4 0
The answer to the problem is (1, 2, 3).
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Answer:

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So,

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x°=180°-90°-42°

x°=48°

7 0
2 years ago
Read 2 more answers
Parallelogram PQRS is shown. m/S=(3x), m/R=120, and m/Q=(2y). Find the value of y.A.
fomenos

Option B. From the parallelogram PQRS the value of y is given to be 30

<h3>How to solve for the value of y from the parallelogram</h3>

In order to get the value of y we have to use the formula

2y + 120 = 80

where the value 120 is the angle that is stated as 120 from the question

2y = 180 - 120

2y = 60

y = 60 / 2

y = 30

Hence the value of y = 30

We can go ahead to get the value of x as well

3x + 120 = 180

take the like terms

3x = 180 - 120

3x = 60

divide through by 3 to get x

60 / 3 = x

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Read more on parallelograms here: brainly.com/question/24056495

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7 0
1 year ago
Perform the indicated operation 2 3/8 x 5 3/4
Butoxors [25]
Hello!

Change each mixed number to an improper fraction to make it easier

2 3/8 = 19/8

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Now, multiply

19/8  × 23/4 = 437/32 = 13 21/32

Answer ⇒ 13 21/32

4 0
3 years ago
Read 2 more answers
A) 5y +32=72<br> B) K/2+24=29
iren [92.7K]

Step-by-step explanation:

A)y=8

B)k=10

5y=72-32

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3 0
3 years ago
The question is in the image! Please help if u can its due really soon
Leno4ka [110]

Answer:

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Step-by-step explanation:

So, since line QS is a straight line, we know that it's 180°. We also know that angles QTR and STR both add up to 180°. That gives us an equation:

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Combine like terms

30x + 45 = 180

Subtract 45 from both sides

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Divide both sides by 30

x = 4.5

Now we know the value of x. We just need to plug it into angle STR's given value:

10(4.5) + 33 = angle STR

45 + 33 = angle STR

78° = angle STR

4 0
3 years ago
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