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alekssr [168]
3 years ago
15

Write an equation of a line that is perpendicular to the line x-2y=8

Mathematics
2 answers:
alex41 [277]3 years ago
8 0

Answer:

y=-2x-4

Step-by-step explanation:

First you make the equation in y=mx+b form

x-2y=8

-2y=-x+8

y=1/2x-4

Then find the perpendicular line by finding the opposite reciprocal of the slope.

y=-2x-4

Helen [10]3 years ago
6 0

2x+y=8 is the equation perpendicular to x-2y=8.

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The courtyard outside East Middle School is in the shape of a rectangle and half-circle.
Nadya [2.5K]

Answer:

The correct option is the third one counting from the top. (5892 m^2)

Step-by-step explanation:

First, we need to remember that:

For a rectangle of length L and width W, the area is:

A = L*W

For a circle of diameter D, the area is:

A = pi*(D/2)^2

Where pi = 3.14

In the image, we can see a rectangle and half a circle, the total area of the image will be equal to the area of the rectangle plus the area of the half circle.

In the image, we can see a rectangle of length L = 100m and width W = 50m

Then the area of the rectangle is:

A = 100m*50m = 5000m^2

And we can see that for the half-circle the diameter is D = 50m

Note that the area of a half-circle is half of the area of a complete circle, then the area of that half-circle is:

A = (1/2)*(3.14*(50m/2)^2) = 981.25 m^2

If we add these two areas we get:

Total area =  5000m^2 + 981.25 m^2 = 5981.25 m^2

If we round it up, we get:

Total area = 5982 m^2

The correct option is the third one counting from the top.

8 0
2 years ago
What is the missing denominator?3/4=18/?
nekit [7.7K]

Answer:

24

Step-by-step explanation:

The equations just need to be equal so you multiply 3 by 6 to get 8 and then 4 by 6 to get 24

3 / 4 = 18 / 24

3 0
3 years ago
4. Solve the multistep equation.<br> 4y + 6 + 3y = 15 - 5y + 3
Lubov Fominskaja [6]

Answer:

y=6

Step-by-step explanation:

7y+6=18-5y

-5y, -6

2y=12

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5 0
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3 years ago
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Which values of x make this equation true?
Evgesh-ka [11]

Answer:

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the answer is -4 and 3

3 0
2 years ago
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