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melamori03 [73]

3 years ago

12

PLS HELP ME PLS HELP ME

1 answer:

aliya0001 [1]3 years ago

8 0

Answer:

A x=-8 or x=-2

B x=-4 or x=-3

C x=-1 or x=-12

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(-2v^7)^3 (-4v^2)^4

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3 years ago

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Alinara [238K]

4 + 3 + 2 = 9
18/9 = 2

3 x 2 = 6

Answer = 6

3 0

3 years ago

Simplified form of 12x-1 = 2(6+5x) +7

horrorfan [7]

X=10

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4 0

3 years ago

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:

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

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

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

$Volume = \pi *4 * 175$

$Volume = 700\pi$

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3 years ago

boxes of whole wheat linguine are on sale this week for 30% off the original price. They cost $1.50 when they are not on sale. W

Svetach [21]

(100-30)% x 1.50=$1.05
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5 0

3 years ago

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