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Bad White [126]
3 years ago
12

Solve the linear system using substitution y - 5 = x 4x - y = 4

Mathematics
1 answer:
Agata [3.3K]3 years ago
3 0

Step-by-step explanation:

X=y-5

Now,

4x-y=4

4(y-5)-y=4

4y-20-y=4

3y=24

Y=8

Substituting the value of y

8-5=x

X=3

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Using the diagram, if angle 3 + angle 4 is a straight line then what is the total<br> measure?
ipn [44]

Answer: 180 degrees

Step-by-step explanation:

Angles on a line add to 180 degrees since they form a straight angle.

5 0
2 years ago
The statement explains why the ordered pair is a solution to the system of equations. Is the statement true or false? True False
tigry1 [53]

The system of the equation doesn't give the solution at (-3, -6).

<h2>Given to us</h2>
  • -4x+y = 6
  • 5x-y =21

<h3>Equation 1,</h3>

-4x+y = 6

solve for y

-4x+y =6\\y= 6+4x

<h3>Equation 2,</h3>

5x-y =21

substitute the value of y in equation 2,

5x-(6+4x) =21\\5x -6 -4x =21\\5x -4x=21+6\\x = 27

Substitute the value of x in equation 2,

5x-y =21\\5(27)-y =21\\135-y = 21\\-y=21-135\\-y = -114\\y=114

We can see that the solution of the two equations is at (27, 114). Also, it can be verified by plotting the line on the graph.

Hence, the system of the equation doesn't give the solution at (-3, -6).

Learn more about system of equations:

brainly.com/question/12895249

6 0
3 years ago
A satellite is orbiting the Earth at the rate of 25 kilometers per minute. How far will it travel in two hours?
Dvinal [7]
1 hour=60 minutes so 25*120=3000 kilometers
3 0
3 years ago
Read 2 more answers
Need to find the value of y
alexgriva [62]

Answer:

√55

Step-by-step explanation:

Notice that the small triangle in the bottom corner shares an angle with the overall triangle.  Also, they are both right triangles.  Therefore, they are similar triangles.

Notice that the large triangle at the top shares an angle with the overall triangle and is also a right triangle.  Therefore it is also similar to the overall triangle and the smaller triangle.

Writing a proportion between the small and large triangles:

y / 11 = 5 / y

y² = 55

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3 years ago
Describe the pattern for 3000,300,30,3
alina1380 [7]
It is being divided by 10.
8 0
4 years ago
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