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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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Use the quadratic formula to solve the equation to the exact value or round to two decimal places.
lys-0071 [83]
First set everything to 0.
{x}^{2}  + x - 5
Giving you A= 1 , B= 1 and C= -5
Then input everything into the quadratic formula and either solve by hand or use a calculator.
Note exact values are found by hand, decimals are found using a calculator.

6 0
3 years ago
Simplify completely****​
andreyandreev [35.5K]

Answer:

\displaystyle \frac{x + 7}{3}

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

<u>Algebra I</u>

  • Terms/Coefficients
  • Factoring

Step-by-step explanation:

<u>Step 1: Define</u>

<u />\displaystyle \frac{x^2 + 12x + 35}{3x + 15}<u />

<u />

<u>Step 2: Simplify</u>

  1. [Fraction] Factor numerator:                                                                          \displaystyle \frac{(x + 5)(x + 7)}{3x + 15}
  2. [Fraction] Factor denominator:                                                                       \displaystyle \frac{(x + 5)(x + 7)}{3(x + 5)}
  3. [Fraction] Divide:                                                                                             \displaystyle \frac{x + 7}{3}
4 0
3 years ago
27 Solve for x to the nearest tenth: x² + x - 5 = 0.
Anestetic [448]

Answer:

Step-by-step explanation:

We can use the quadratic formula to get the answer to this

Quadratic Formula: -b +- √b² - 4ac/2a

Once we input A, B, and C into this, and solve any multiplication, we get

x = -1  +- √1 + 20/2

We divide by 2a, which 2a = 2.

-0.5 +- 10.5.

these are the following values of x:

x = 10

x = 11

Pretty sure this is it, hope it helps!

4 0
2 years ago
Can someone help me with this??
Umnica [9.8K]

Answer:

divide by 2

Step-by-step explanation:

5 0
3 years ago
I need help!! F(4) I f f(x)=3x-1
Amanda [17]

Answer:

f(4) =11

Step-by-step explanation:

f(x)=3x-1

Let x = 4

f(4)=3*4-1

    = 12-1

    = 11

6 0
3 years ago
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