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3 years ago

Can someone help me with this question? step by step pls

Mathematics

2 answers:

hammer [34]3 years ago

6 0

Answer:

Step-by-step explanation:

Sonja [21]3 years ago

5 0

In order to find the area of the web browser, recall that the equation to find the area is length*width. Since we know that the area is 24 square inches, we can create an equation:

x(x - 2) = 24
x^2 - 2x - 24 = 0

Factor:
(x - 6)(x + 4) = 0

{6, -4}

Since the length can't be a negative number, we can rule out -4 and affirm that x = 6.

Since we know the browser makes up 3/13 of the screen, we can make an equation with a variable where 'a' represents area of the computer:

(3/13) * a = 6
3a/13 = 6
3a = 78
a = 26

Now that we know the area, we can solve for the dimensions:

l*w = 26
(x + 7) * w = 26
(6 + 7) * w = 26
(13) * w = 26
w = 2

Input the width into the original equation:
l * (2) = 26
l = 13

The dimensions of the computer are 13 x 2.
The length of the browser is 6 inches.

Let me know if you need me to explain anything I did here.
-T.B.

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Softa [21]

Answer:

(2)(120)(80) + (2)(120)(50) - (4)(60)(5²)

Step-by-step explanation:

The lateral faces of the building are the 4 sides of the building consisting:

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Area of the two rectangular faces = (2)(120)(80)

And

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✔️Total lateral surface area of the building = (2)(120)(80) + (2)(120)(50)

Note: we are asked to find the expression that represents the total surface area that needs to be painted given that there are 60 windows on each lateral face of the building of the shape of a square with side lengths of 5 ft.

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✅total lateral surface area of the building that will be painted = (2)(120)(80) + (2)(120)(50) - (4)(60)(5²)

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