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kobusy [5.1K]
3 years ago
10

What is the approximate area of a circle with a radius of 28 ft?

Mathematics
1 answer:
Flura [38]3 years ago
7 0
The answer is B.163.3. 
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How would the fraction <img src="https://tex.z-dn.net/?f=%5Cfrac%7B7%7D%7B1-%5Csqrt%7B5%7D%20%7D" id="TexFormula1" title="\frac{
allsm [11]

Answer:

\frac{7 + 7 \sqrt{5} }{ - 4}

Step-by-step explanation:

We would multiply the fraction by its conjugate

( A conjugate is a expression that has the same integer or number values but have different signs) for example

5x + 2

and

5x - 2

ARE Conjugates.

The conjugate of

1 -  \sqrt{5}

is

1 +  \sqrt{5}

So this means we will multiply the expression by 1 plus sqr root of 5 on the numerator and denominator.

Our new numerator will be

7 \times (1 +  \sqrt{5} ) = 7 + 7 \sqrt{5}

We can apply the difference of squares for the denominator.

(x + y)(x - y) = x {}^{2}  -  {y}^{2}

So our denominator will be

1 - 5 =  - 4

So our rationalized fraction will be

\frac{7 + 7 \sqrt{5} }{ - 4}

7 0
3 years ago
.Write 1.2 - 10-5 in standard form​
Lena [83]
1.2 .10/2=120.0( standard form)

because the exponent of the 10s term is positive we must move the decimal point 2 places to the right.



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6 0
3 years ago
My brother needs help
kkurt [141]

Answer:

1.95

Step-by-step explanation:

i used scientific its a caculator

3 0
3 years ago
Read 2 more answers
Select the correct answer.<br> What is the factored form of this expression?
katen-ka-za [31]

Answer:

whats the expression?

Step-by-step explanation:

8 0
3 years ago
An international company has 12,700 employees in one country. If this represents 23.6% of the company's employees, how many empl
salantis [7]

Answer: 33.6% of X = 26800

X = 26800 / 33.6%

   = 26800 / 0.336

  = 33.6%

HOPE THIS HELPS HAVE A AWESOME NIGHT/DAY✨

Step-by-step explanation:

6 0
3 years ago
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