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3 years ago

The length of one side of a square is x-5. what is the area of the square

Mathematics

2 answers:

azamat3 years ago

7 0

Step-by-step explanation:

The area of a square can be represented by the following equation:

$A = s^{2}$

where $s$ is the side length of the square.

We know that the side length is $x - 5$ , so we can plug this into the equation to get the area:

$A = s^{2}$

$A = (x - 5)^{2}$

$A = x^{2} - 10x + 25$

Whitepunk [10]3 years ago

7 0

Answer:

(x-5)(x-5)

X^2-5x-5x+25

x^2-10x+25

Step-by-step explanation:

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The length and width of a rectangular room are measured to be 3.955±0.005m. Calculate the area of the room and its uncertainty i

Margarita [4]

Answer:

The area of the room and its uncertainty in square meters is:

15.642±0.040 $m^2$

Step-by-step explanation:

We know the area of a rectangular room is the multiplication of the length and width:

$Area= 3.955m*3.955m\\Area= 15.642 m^2$

Now we need to know the uncertainty, the uncertainty of a multiplication is:

$\frac{δ_a}{|Area|} =\frac{δ_L}{|L|}+\frac{δ_W}{|W|}$ (1)

$δ_A$ : Area uncertainty

$δ_L$ : Length uncertainty

$δ_W$ : Width uncertainty

A: Area of the room

L: Length

W: Width

Clearing the uncertainty of the area:

$δ_A=(\frac{δ_x}{|x|}+\frac{δ_y}{|y|})*Area$ (2)

$δ_A=(\frac{0.005}{|3.955|}+\frac{0.005}{|3.955|})*15.642 m^2$

$δ_A= 0.040 m^2$

The area of the room and its uncertainty in square meters is:

15.642±0.040 $m^2$

6 0

3 years ago

What is the answer to this question

ycow [4]

X = 4 y = - 3

Substitute x for 4 and y for - 3

x² - 4y
 2

4² - 4 *(- 3)
 2

16 - ( - 12 )
2

16 + 12
2

28 = 14
2

Solution: 14

8 0

3 years ago

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Please help me with this will reward brainlest

Liono4ka [1.6K]

A) 11.38 + 4.03 = 15.41

B) 10 + 5.41 = 15.41

C) 12.38 + 2.93 = 15.31

D) 9.2 + 6.21 = 15.41

E) 7.54 + 6.87 = 14.41

Answer

A) 11.38 + 4.03 = 15.41

B) 10 + 5.41 = 15.41

D) 9.2 + 6.21 = 15.41

3 0

3 years ago

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In 36 days a girl spent 18 dollars. On average, what did she spend daily?

ale4655 [162]

On average, she spent 18/36 = 0.5$

3 0

3 years ago

Find the y-coordinate of the y-intercept of the polynomial function defined below. f(x)=2(3x+4)(x^2+2)

Salsk061 [2.6K]

Answer:

Step-by-step explanation:

The best way to find out the answer to your question is to graph the cubic. As you can see, the y intercept is (0,16).

How was this obtained. notice that if x = 0 then

f(0) = 2(3*0+4)(0^2 + 2)

f(0) = 2(4)(2)

f(0) = 16 just as the graph tells us.

3 0

3 years ago