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Alina [70]
3 years ago
12

Find the value of y .

Mathematics
1 answer:
vivado [14]3 years ago
7 0

Answer:

y=5/3  or y=1.67

Step-by-step explanation:

In this problem we have  that

(5x+8)=21x ----> given problem

21x-5x=8

16x=8

x=0.5

In the same way

Remember that the slope of a line is a constant

so

20y-2=17y+3

Solve for y

20y-17y=3+2

3y=5

y=5/3  or y=1.67

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Question
Vilka [71]

The area of the square is given by the  quadratic expression:

A = 9x^2 - 6xy + y^2

<h3 /><h3>How to express the area of the given square?</h3>

If we have a square whose side measures S, the area of said square is given by the equation:

A = S^2

In this case, we know that the side length of our square is given by:

S = 3x - y

Replacing that in the area equation we get:

A = (3x - y)^2

Now we just need to expand that product, we will get:

A = (3x - y)^2 = (3x)*(3x) + (3x)*(-y) + (-y)*(3x) + (-y)*(-y) \\\\A = 9x^2 - 6xy + y^2

Then we can see that the correct option is the last one.

If you want to learn more about squares you can read:

brainly.com/question/24487155

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7 0
2 years ago
100 POINTS PLEASE HELP ASAP!!!!!
igomit [66]
Answer:

B. act

........
6 0
3 years ago
Read 2 more answers
The length of a rectangle is shown below:
bazaltina [42]

Answer:

  • C(3, -3), D( -2, -3)

Step-by-step explanation:

<u>The coordinates of A and B are:</u>

  • A( -2, 3) and B(3, 3)

<u>The distance AB is:</u>

  • AB = 3 - (- 2) = 5 units

<u>The rectangle wit the area of 30 units² should have the other dimension:</u>

  • AC = BD = 30/5 = 6 units

<u>Since D and C are below of the A and B, their coordinates will be same on x-axis but different on y-axis:</u>

  • D = (-2, 3 - 6 = - 3) = (- 2, - 3)
  • C = (3, 3 - 6 = - 3) = (3, - 3)

Correct choice is B

3 0
3 years ago
Plz help correct answer gets brainliest.
Leona [35]

whats the question?????

3 0
3 years ago
Read 2 more answers
Lculating Angle Measu
Degger [83]

Answer:

HOPE THIS MIGHT HELP YOU

6 0
3 years ago
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