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zlopas [31]
3 years ago
12

The length of a rectangular pool is 4 times its width. if the perimeter of the pool is 140 meters, find its length and width of

the pool
Mathematics
1 answer:
Goshia [24]3 years ago
7 0
L=4W
P=2(L+W)
P=140

140=2(L+W)
divide both sides by 2
70=L+W
L=4W
70=4W+W
70=5W
divide both sides by 5
14=W
width=14 meters
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3 years ago
What is the value of x
Gemiola [76]

9514 1404 393

Answer:

  x = 10

Step-by-step explanation:

The mnemonic SOH CAH TOA reminds you of the relation ...

  Sin = Opposite/Hypotenuse

  sin(30°) = 5/x

Solving for x, we get ...

  x = 5/sin(30) = 5/0.5

  x = 10

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It can be helpful to remember that the side ratios in a 30°-60°-90° triangle are ...

  1 : √3 : 2

That is, the hypotenuse is 2 times the length of the side opposite the 30° angle. Here, that means x = 2×5 = 10, as we found above.

6 0
2 years ago
Which equation results from taking the square root of both sides of (x 9)2 = 25? x 3 = ±5 x 3 = ±25 x 9 = ±5 x 9 = ±25.
kow [346]

The equation which is results from taking the square root of both sides of the provided equation is,

(x+9)=\pm5\\

<h3>What is the square root?</h3>

A square root of a number is the value which is when multiplicand by itself gives the same value as the number posses.

Let a number is <em>a. </em>Then this number in the form of square root can be written as,

a=\sqrt{a}\times \sqrt{a}

The given algebraic equation in the problem is,

(x+ 9)^2 = 25

Take the square root, in both sides,

\sqrt{(x+ 9)^2} = \sqrt{25}\\\sqrt{(x+ 9)^2} = \sqrt{5^2}

Cancel out the square root with the square of the number as,

(x+9)=\pm5\\

Hence, the equation which is results from taking the square root of both sides of the provided equation is,

(x+9)=\pm5\\

Learn more about the square root of number here;

brainly.com/question/664132

7 0
2 years ago
Mary borrowed 400.00 from a bank for 2 years. The total interest she paid was 24.00 Mary bro 400 from a bank for 2 years and was
iogann1982 [59]

Answer:

3%

Step-by-step explanation:

24÷400=.06

.06=6%

6%÷2=3%

5 0
2 years ago
Help me solve and explain this
g100num [7]

Answer:

B because the length of R to U is 6x5

7 0
2 years ago
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