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3 years ago

13

Simplify.

}" alt="\sqrt{\frac{18}{50} }" align="absmiddle" class="latex-formula">

2 answers:

VARVARA [1.3K]3 years ago

6 0

Answer:

3/5 or 0.6 or 6% depends on what your asking for

Step-by-step explanation:

^2 sqrt 0.36 = 0.6

STALIN [3.7K]3 years ago

3 0

$Answer: \\ \sqrt{ \frac{18}{50} } = \sqrt{ \frac{9}{25}} = \sqrt{ \frac{ {3}^{2} }{ {5}^{2} } } = \frac{3}{5}$

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. Simplify an expression for the area of the rectangle shown above

mel-nik [20]

8x+3x5=66 there you go

3 0

2 years ago

An aquarium with a square base has no top. There is a metal frame. Glass costs 8 dollars/m^2 and the frame costs 7 dollars/m. Th

Irina-Kira [14]

Given that the volume of the aquarium is 20m^3.

Volume = Area of Base x height

Area of Base = Volume / height = 20/h

Given that the aquarium has a square base.

Area of square = l^2

Thus, the length of the base of the aquarium is $\sqrt{area \ of \ base} = \sqrt{ \frac{20}{h} }$

The frame is to cover 8 sides with the length equal to the length of the base and 4 sides with the length of the height.

Thus, the total perimeter of the frame is given by $8\sqrt{\frac{20}{h}}+4h= \sqrt{64\left(\frac{20}{h}\right)}+4h = \sqrt{\frac{1,280}{h}}+4h$

Area of the four side faces of the aquarium is 4 times the length of the base times the height = $4\times\sqrt{ \frac{20}{h} }\times h=\sqrt{16\left(\frac{20}{h}\right)h^2}=\sqrt{320h}$

Total area to be covered by grass is the base and the four side faces and is given by $\frac{20}{h}+\sqrt{320h}$

Cost of the entire metal frame = $7\left(\sqrt{\frac{1,280}{h}}+4h\right)= \sqrt{49\left(\frac{1,280}{h}\right)}+7(4h) = \sqrt{\frac{62,720}{h}}+28h$

Cost of the entire grass = $8\left(\frac{20}{h}+\sqrt{320h}\right)=\frac{160}{h}+\sqrt{64(320h)}=\frac{160}{h}+\sqrt{20,480h$

Therefore, total cost in terms of the height, h, is given by

$C=\sqrt{\frac{62,720}{h}}+28h+\frac{160}{h}+\sqrt{20,480h$

3 0

3 years ago

What can be used to determine the length of segment AB?

Vikki [24]

It depends on what you mean by "what can be used", you can use a protractor or ruler since it's a line segment. OR you can use the formula a^ + b^ = c^ to find out all the measurements.......

If you still can't find it, then, you can try to find the other measurements around that specific line segments. And it DEPENDS on what you choose to find the length of this segment.

( There's no picture on my screen, so I'm guessing that you didn't put any.. )

Well, I hope this can help you :3

STAY SAFE!! :)

6 0

3 years ago

7(n+4) ....................

Juli2301 [7.4K]

Answer:

<h2>7n + 28</h2>

Step-by-step explanation:

$7(n + 4)$

Expand

$7 \times n = 7n \\ 7 \times 4 = 28 \\ \\ 7n + 28$

4 0

3 years ago

Please help with this

Paraphin [41]

Answer:

x = 5

Step-by-step explanation:

The sides are in proportion.

The proportion is 20/36

The other sides must be in the same proportion: 5x / 45

5x/45 = 20/36 You can reduce the left side by dividing top and bottom by 5

1x / 9 = 20/36 You can reduce the right side by dividing by 4

x / 9 = 5/9 at this point you should be able to see that x = 5, because the denominators are the same.

That is the answer.

However you can extend this by cross multiplying

9x = 45 Divide by 9

x = 45/9

x = 5

5 0

3 years ago