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Alex787 [66]
3 years ago
9

The expression 2700-x2 gives the area of the courtyard , in

Mathematics
1 answer:
jarptica [38.1K]3 years ago
4 0

Answer:

4x - 36 feet

Step-by-step explanation:

The area A of a  square whose sides are s units is given as

A = s * s

Given that the area A = x^2-18x+81, factorizing

A = x^2-9x-9x+81

A= x(x-9)-9(x-9)

A = (x-9)(x-9)

A = (x-9)^2

This means that the size of each side of the square  courtyard is x-9 feet long

Recall that the perimeter P of a square whose side is s long is given as

P = 4s hence since the side of the courtyard is x - 9 feet, the perimeter of the courtyard

P = 4(x-9)

= 4x - 36 feet

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Wrong answers will be reported ​
PIT_PIT [208]

The solution to the equation is p = 1/3 and q = undefined

<h3>How to solve the equation?</h3>

The equation is given as:

p^2 - 2qp + 1/q = (p - 1/3)

The best way to solve the above equation is by the use of a graphing calculator i.e. graphically

However, it can be solved algebraically too (to some extent)

Recall that the equation is given as:

p^2 - 2qp + 1/q = (p - 1/3)

Split the equation

So, we have

p^2 - 2qp + 1/q = 0

p - 1/3 = 0

Solve for p in p - 1/3 = 0

p = 1/3

Substitute p = 1/3  in p^2 - 2qp + 1/q = 0

So, we have

(1/3)^2 - 2q(1/3) + 1/q = 0

This gives

1/9 - 2/3q + 1/q = 0

This gives

2/3q + 1/q = -1/9

Multiply though by q

So, we have

2/3q^2 + 1 = -1/9q

Multiply through by 9

6q^2 + 9 = -q

So, we have

6q^2 + q + 9 = 0

Using the graphing calculator, we have

q = undefined

Hence. the solution to the equation is p = 1/3 and q = undefined

Read more about equations at:

brainly.com/question/13763238

#SPJ1

5 0
1 year ago
Subtract. <br> Express your answer in simplest form<br><br> 3 1/4 - 2 3/4
lord [1]
The answer to this is .5 or 1/2.
3 0
3 years ago
Read 2 more answers
Something times something that equals 7
Anestetic [448]
Well since two solid numbers cant make 7 I would do 3.5 x 7
3 0
3 years ago
Read 2 more answers
What is root 3 × 2 root 3​
Nezavi [6.7K]

Answer:

3

Step-by-step explanation:

The principal, real, root of:

\sqrt[2]{3}

=1.73205081

All roots:

1.73205081

−1.73205081

 

3 is not a perfect square

5 0
3 years ago
Which of the following correctly completes the the square for the equation below? x^2+18x=0
Nookie1986 [14]
X² +18x = 0

To complete the square we are going to use formula a² +2ab +b² = (a+b)²

x² +2*9*x = 0
x² +2*9x+9² = 9²
(x+9)² = 9²
√(x+9)² = +/-√9²
x+9 = 9, or x+9 = -9
x=0, or x= - 18

The equation could be solved different way
x² +18x = 0
x(x+18) = 0
x=0 or x+18=0
x=0 or x=-18

4 0
3 years ago
Read 2 more answers
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