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3 years ago

7

Marking brainliest! What is the question asking did ?

1 answer:

zloy xaker [14]3 years ago

8 0

Answer:

4.5

Step-by-step explanation:

Its asking if y was six what would x be. Then you get n.

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A lampshade has a height of 12cm and upper and lower diameters of 10cm and 20cm A)what area of material is required to cover tha

netineya [11]

Answer:

$(a)\ Area = 195\pi$

$(b)\ Volume = 700\pi$

Step-by-step explanation:

Given

$h = 12$

$d_1 = 10$ --- lower diameter

$d_2 = 20$ --- upper diameter

Solving (a): The curved surface area

This is calculated as:

$Area = \pi l(r_1 + r_2)$

Where

$r_1 = 0.5 * d_1 = 0.5 * 10 = 5$ --- lower radius

$r_2 = 0.5 * d_2 = 0.5 * 20 = 10$ --- upper radius

And

$l = \sqrt{h^2 + (r_1 - r_2)^2$ ---- l represents the slant height of the frustrum

$l = \sqrt{12^2 + (5 - 10)^2$

$l = \sqrt{12^2 + (-5)^2$

$l = \sqrt{144 + 25$

$l = \sqrt{169$

$l = 13$

So, we have:

$Area = \pi l(r_1 + r_2)$

$Area = \pi * 13(5 + 10)$

$Area = \pi * 13(15)$

$Area = 195\pi$

Solving (b): The volume

This is calculated as:

$Volume = \frac{1}{3}\pi * h * (r_1^2 + r_2^2 + (r_1 * r_2))$

This gives:

$Volume = \frac{1}{3}\pi * 12 * (5^2 + 10^2 + (5 * 10))$

$Volume = \frac{1}{3}\pi * 12 * (25 + 100 + (50))$

$Volume = \frac{1}{3}\pi * 12 * (175)$

$Volume = \pi *4 * 175$

$Volume = 700\pi$

6 0

3 years ago

WILL MARK BRANLIEST A graph is shown below: Dotted line joining negative 1, negative 2 and 5,0 and the region above the line is

s2008m [1.1K]

Hello there!

<span>A graph is shown below: Dotted line joining negative 1, negative 2 and 5,0 and the region above the line is shaded. Which of the following inequalities is best represented by this graph? x − 3y > 5 x − 3y < 5 x − 2y > 5 x − 2y < 5

Answer:
</span><span>x – 3y < 5</span>

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3 years ago

Janet has one rectangular-shaped paper with a length of 11/12 foot and a width of 3/4 foot.

Mice21 [21]

Hi bestie lol i’m failing math too and use this app as a lil cheat :)

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3 years ago

Which expression is equivalent to this polynomial expression?<br><br> (2x²-3y²)(4x4+6x²y²+9y4

alexandr1967 [171]

Answer:

The answer is 8x^6 - 27y^6

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3 years ago

What percent is 93 out of 930?

joja [24]

Answer:

1/10

Step-by-step explanation:

93÷93 930÷93

=1/10

6 0

3 years ago