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andreyandreev [35.5K]
3 years ago
12

I need help guys or girls please help me and thank you

Mathematics
1 answer:
Fynjy0 [20]3 years ago
3 0
I'm not 100% sure but from what I learned, I think it's the last one.
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A rectangle swimming pool is 8 feet deep. One side of the pool is 4.5 times longer than the other. The amount of water needed fo
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The side lengths of the pool 10 ft and 45 ft.

<u>SOLUTION: </u>

Given, a rectangle swimming pool is 8 feet deep.  

One side of the pool is 4.5 times longer than the other.  

Let the length of pool be n feet, the width will be 4.5n feet

The amount of water needed for the swimming pool is 3600 cubic ft

We have to find the dimensions of the pool. Now, we know that,  

\begin{array}{l}{\text {volume of pool}=\text {depth} \times \text {length } \times \text {width}} \\\\ {\rightarrow 3600 \text { cubic } f t=8 \text { feet } \times \text { n feet } \times(4.5 n) \text { feet }} \\\\ {\rightarrow 8 n \times 4.5 n=3600} \\\\ {\rightarrow 36 n^{2}=3600} \\\\ {\rightarrow n^{2}=100}\end{array}

On taking square root on both sides we get,

\begin{array}{l}{\rightarrow\sqrt{n^{2}}=\sqrt{100}} \\\\ {\rightarrow n=10 \mathrm{ft}}\end{array}

So, the width will be 4.5 n=4.5 \times 10=45 \mathrm{ft}

5 0
3 years ago
4/5x = 3<br> please solve for x
san4es73 [151]

Answer:

x=15/4 or x=3.75

Step-by-step explanation:

4/5*x=3

4/5=0.8

0.8*3.75=3

3 0
3 years ago
WILL MARK BRAINLIEST! PLEASE HELP MEH!<br> Find the area
Lynna [10]
To find the area you just multiply 10 by 3.6. 

10(3.6) = 36

Area = 36 cm

Hope this helps!
7 0
3 years ago
Which of the following shows 2x3y - 3x2 + 7y2x - 12y written in standard form?. a) 2x3y+7y^2x-3x^2-12y. b) -12y+7y^2x-3x^2+2x^3y
Evgen [1.6K]
To write a polynomial in its standard form, arrange the exponents of the variables in decreasing order giving the priority to the first variable that appears in the alphabetical order. So, from the given above, the answer would be
                                2x³y + 7y²x - 3x² - 12y
Thus, the answer is letter A. 
8 0
3 years ago
Read 2 more answers
In a family’s monthly budget, 2/5 of the income is spend on housing and 1/5 of the income is spent on food. How would you determ
aniked [119]

Answer:

2/5 is left

Step-by-step explanation:

Add the two you have so far together. 2/5+1/5=3/5

So 3/5 of your budget is used. 3/5 is a fraction, meaning that 5 is the whole.

Subtract 3 from 5 and you get 2. There are 2/5 left in the budget for everything else.

5 0
3 years ago
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