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likoan [24]
2 years ago
14

Pls help will mark as brainliest​

Mathematics
1 answer:
Andrej [43]2 years ago
6 0

Answer:

(i) The surface(sheet) of a conical tent is circular so we must use the formula for the area of a circle to find out;

Given the diameter 14, we must find the radius.

To find the radius we must do 1/2 of the diameter to get the radius.

14 x 1/2 = <u>7</u>, is the radius

Formula for area of a circle;

a = πr^2

where pi is 3.14 or 22/7, r is the radius which is being squared

Plug in the actual values:

a = πr^2

a = 3.14 x 7^2

a = 3.14 x 49

a = 153.86 square meters, is the area of the conical tent's sheet.

(ii) Since there are 153.86 meters in one sheet, we should multiply that by         $12(because $12 per meter) to get the total cost.

So,

153.86 meters x $12 = $1,846.32, it would cost 1,846.32 dollars.

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**10 POINTS PLEASE HELP!!**
Sliva [168]

Answer:

The volume increases by a factor or 64. When the cube is dilated, each side length is increased by 4, so the volume is increased by 64.

Step-by-step explanation:

Let L represents the Length of the cube before it's dilated.

Volume, V1 = Length * Length * Length

Volume, V1 = L * L * L

Volume, V1 = L³

When the cube is dilated by a factor of 4.

The new Length becomes 4L.

The new volume is calculated as thus.

New Volume, V2 = 4L * 4L * 4L

New Volume, V2 = 64L³

Dividing the new volume by the old volume gives the increment factor.

Factor = New Volume ÷ Old Volume

Factor = V2/V1

Factor = 64L³/L³

Factor = 64.

Hence, when the sides of the cube is dilated by 4, the volume increases by a factor of 64.

Filling the gap of the given sentence;

"The volume increases by a factor or 64. When the cube is dilated, each side length is increased by 4, so the volume is increased by 64"

8 0
3 years ago
Devansh buys a house for $189,900. The tax rate is 7.5%. How much was the tax on the home?
iren2701 [21]
The tax should be $14242.5
6 0
3 years ago
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What is the value of x?
Morgarella [4.7K]

Answer:

91.5

Step-by-step explanation:

I did the math. Add up all the numbers and then, divide the result by two to get 91.5

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3 years ago
draw the line which will represent the graph of the equation y-2.5x=c if it's known it passes through the point K(2, -3)
Oksi-84 [34.3K]

The line will represent the graph of the equation y=2.5x-8.

The two points necessary to graph would be (2,-3) and (0,-8).

<h3>What is the slope-intercept form?</h3>

The slope-intercept form is y=mx+c

If the line passes through (2,-3),

let us plugin and find c.

So we get,

-3-2.5(2)=c

-3-5=c

c=-8

So, The equation of the line is y=2.5x-8.

To learn more about the equation visit:

brainly.com/question/2972832

8 0
2 years ago
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Missy did this work to solve an equation. Did she make an error?
STatiana [176]

Answer: yes, she did made an error, a very big mistake.

Step-by-step explanation:

first, we have varieties of ways in which we can use to solve this, the most important thing is to stick to the mathematical rules of solving any equations.

using the most simpler method

-4x + 11 = 6x + 1

collect like ter

-4x -6x = 1 - 11

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divide bothside by -10

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secondly, using the method she is intending to use, its more easier to subtract 6x from bothside

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-6x -6x

_______________

-10x + 11 = 1

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or still we can doing it exactly as she did, but it will take us through a long way i.e by adding +6

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2x +11 = 12x +1

2x-12x = 1-11

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4 0
3 years ago
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