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Ira Lisetskai [31]
4 years ago
6

Which expression is equal to 3 V-75?

Mathematics
1 answer:
Anton [14]4 years ago
6 0

Answer:

15i\sqrt{3}

Step-by-step explanation:

Using the rule of radicals

\sqrt{a} × \sqrt{b} ⇔ \sqrt{ab} and \sqrt{-1} = i

Given

3\sqrt{-75}

= 3 × \sqrt{25(3)(-1)}

= 3 × \sqrt{25} × \sqrt{3} × \sqrt{-1}

= 3 × 5 × \sqrt{3} × i

= 15i\sqrt{3}

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Given f of x is equal to the quantity x minus 4 end quantity divided by the quantity x squared plus 13x plus 36 end quantity, wh
gavmur [86]

The simplified expression of the function f(x) =\dfrac{x-4}{x^2+13x+36} is

f(x) = \dfrac{x-4}{(x+9)(x+4)}. f(x) is increasing for all x > –4.The correct answer is option C.

<h3>What is a function?</h3>

A function is defined as a relation between the set of inputs having exactly one output each.

The function expression is given as:

f(x) =\dfrac{x-4}{x^2+13x+36}

Expand the denominator

f(x) =\dfrac{x-4}{x^2+4x +9x+36}

Factorize the denominator

f(x) =\dfrac{x-4}{x(x+4)+9(x+4)}

Factor out x + 9

f(x) = \dfrac{x-4}{(x+9)(x+4)}

The simplified expression of the function f(x) =\dfrac{x-4}{x^2+13x+36} is

f(x) = \dfrac{x-4}{(x+9)(x+4)}. f(x) is increasing for all x > –4

Read more about functions at:

brainly.com/question/1851758

#SPJ1

8 0
2 years ago
Blake and 3 friends meet for lunch . his​
____ [38]

Answer:

if this is finish the problem then

"his friends decided to order pizza for lunch. one of his friends said they wanted to eat 5 slices. the other one said he wanted 3 and the last one said they must wanted 7 while little Blake just wanted 2. how many boxes of pizza would Blake have to order."

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7 0
3 years ago
Read 2 more answers
HELP ME ANSWER THIS QUESTION ILL GIVE BRAINLIEST!!!
irina1246 [14]

Answer:4/7 x2/3 =8/21

1/2x 11/12=11/22

Step-by-step explanation:

hopes it helps

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If the sin 30 = 1/2, then which statement is true?
egoroff_w [7]

Answer:

cos 60° = 1/2 because the angles are complements.

Step-by-step explanation:

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3 years ago
Which expression is equivalent to the square root of 1/8
irina1246 [14]
When you say "which," it sounds like it should be multiple choice. Anyways, here's the simplified form of \sqrt{\frac{1}8}}

\sqrt{\frac{1}8}} = \frac{\sqrt{1}}{\sqrt{8}} = \frac{1}{\sqrt{8}} * \frac{\sqrt{8}}{\sqrt{8}}=\boxed{\frac{\sqrt{8}}8}

(When simplifying fractions, you should <em>never</em> have a square root on the bottom. Multiply by the square root to cancel it out)
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4 years ago
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