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3 years ago

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

$1 - \sqrt{5}$

$1 + \sqrt{5}$

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.

Can you mark this Brainliest? Thanks love!!

⋅

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

Read 2 more answers