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3 years ago

Help very fast please help me

Mathematics

1 answer:

Irina18 [472]3 years ago

6 0

Find the discount price and subtract from the total to find the sale price.

To find the discount price, multiply 90 b 40% (convert 40% into decimal)

90 x 0.4 = 36

Next, subtract the discount from the total to find the sale price.

90 - 36 = 54

So, the sale price is <u>$54</u>.

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Rectangular swimming pool has a perimeter of (6x-6) feet and a width of x. find the length

Dvinal [7]

The first thing you should know for this case is that the perimeter of a rectangle is defined as:
P = 2L + 2W
Where
L = length
W = Wide
We then have to clear the length:
L = (P-2W) / 2
Substituting the values
L = ((6x-6) -2x) / 2
Rewriting:
L = ((3x-3) -x)
L = 2x-3
Answer:
the length is
2x-3

7 0

3 years ago

Can someone plz help me

enyata [817]

460×3= 1380 That's all I can give.

7 0

3 years ago

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bulgar [2K]

Answer:

Step-by-step explanation:

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3 years ago

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How many liters are in 2.5 KL

Paladinen [302]

There are 2,500 liters

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3 years ago

Find the volume of the solid generated by revolving the region bounded above by yequals16 cosine x and below by yequals3 secant

Reika [66]

Answer:

$V=\dfrac{256\pi^2}{3}+46\pi\sqrt{3}$

Step-by-step explanation:

Let the functions be $y_1$ and $y_2$

$y_1=3\sec x$

$y_2=16\cos x$

The volume of the solid of revolution generated is given by

$V = \int_\dfrac{-\pi}{3}^\dfrac{\pi}{3} \pi(y_2^2 - y_1^2) dx$

$V = \int_\dfrac{-\pi}{3}^\dfrac{\pi}{3} \pi(16\cos x)^2 - (3\sec x)^2) dx$

$V = \pi\int_\dfrac{-\pi}{3}^\dfrac{\pi}{3} 256\cos^2 x - 9\sec^2x) dx$

Using the trigonometric expansion of $\cos^2x = \dfrac{1+\cos 2x}{2}$ and integrating it as well as using the fact that the integral of $\sec^2x=\tan x$ , we have

$V =\dfrac{256\pi^2}{3}+46\pi\sqrt{3}$

7 0

3 years ago