3 years ago

The surface area of a swimming pool is 210 square feet. What is the length d of the deep end (in feet)?

1 answer:

8 0

$\bf \textit{area of a rectangle}\\\\
A=Lw~~
\begin{cases}
L=length\\
w=width\\[-0.5em]
\hrulefill\\
A=210\\
w=10\\
L=d+9
\end{cases}\implies 210=(d+9)(10)\implies \cfrac{210}{10}=d+9
\\\\\\
21=d+9\implies 12=d$

You might be interested in

Do the ratios 21:28 and 6:8 form a proportion?

Nezavi [6.7K]

Answer:

Yes

Step-by-step explanation:

they are both equal to 3:4

21:28 can be reduced by 7

21/7=3

28/7=4

and 6:8 can be reduced by 2

6/2=3

8/2=4

7 0

2 years ago

Sin (a/2) = + or - sqrt 1-cos a / 2 <br> for all values of a.<br> A. True<br> B. False

loris [4]

False, I think that’s correct but I’m sorry if bot.

8 0

2 years ago

Which expression is equivalent to 17s - 10 + 3(2s + 1)

tino4ka555 [31]

The answer to 17s-10+3(2s+1) is 23s-7

5 0

2 years ago

Read 2 more answers

Sara claims that a sequence of transformations carries rectangle 1 onto rectangle 2. Which of the following sequences of transfo

Andrei [34K]

Answ

Step-by-step explanation:

7 0

2 years ago

3 divided by what equals -8.16

antiseptic1488 [7]

-2.72
Hope that helped
Do you know criminal minds?

8 0

3 years ago