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3 years ago

7

Help me please I all ready submit all my question on my profile go see it it is due right now I will mark you as a brainlest rig

ht

1 answer:

pashok25 [27]3 years ago

6 0

Answer:

ok

Step-by-step explanation:

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Will mark brainliest

victus00 [196]

Answer:

2

Step-by-step explanation:

8 times 1/4 equals 2

if this is wrong i am so sorry

3 0

2 years ago

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A circular swimming pool has a diameter of 40 meters. The depth of the pool is constant along west-east lines and increases line

Nataliya [291]

Answer:

Volume is $2000\pi\ m^{3}$

Solution:

As per the question:

Diameter, d = 40 m

Radius, r = 20 m

Now,

From north to south, we consider this vertical distance as 'y' and height, h varies linearly as a function of y:

iff

h(y) = cy + d

Then

when y = 1 m

h(- 20) = 1 m

1 = c.(- 20) + d = - 20c + d (1)

when y = 9 m

h(20) = 9 m

9 = c.20 + d = 20c + d (2)

Adding eqn (1) and (2)

d = 5 m

Using d = 5 in eqn (2), we get:

$c = \frac{1}{5}$

Therefore,

$h(y) = \frac{1}{5}y + 5$

Now, the Volume of the pool is given by:

$V = \int h(y)dA$

where

A = $r\theta$

$A = rdr\ d\theta$

Thus

$V = \int (\frac{1}{5}y + 5)dA$

$V = \int_{0}^{2\pi}\int_{0}^{20} (\frac{1}{5}rsin\theta + 5) rdr\ d\theta$

$V = \int_{0}^{2\pi}\int_{0}^{20} (\frac{1}{5}r^{2}sin\theta + 5r}) dr\ d\theta$

$V = \int_{0}^{2\pi} (\frac{1}{15}20^{3}sin\theta + 1000) d\theta$

$V = [- 533.33cos\theta + 1000\theta]_{0}^{2\pi}$

$V = 0 + 2\pi \times 1000 = 2000\pi\ m^{3}$

7 0

3 years ago

A laboratory experiment requires 2400 milligrams of sugar. How many kilograms of sugar does the experiment require?

telo118 [61]

Answer:

0.0024

Step-by-step explanation:

1 killogram=1000000

5 0

3 years ago

Choose the inequality that represents the following graph (ANSWER ASAPP PLEASE)

Makovka662 [10]

B - Since it is a dotted inequality, it would be a equal to and something else. And since it is greater than 3, it would be X is equal to or less than 3

5 0

2 years ago

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Hey, wanna pair our account on Brainly so we can share the perks? https://brainly.com/invite/d400e5c3acee453f3779cad4a83f3cb3?ut

saw5 [17]

Answer:

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Step-by-step explanation:

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2 years ago

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