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sweet-ann [11.9K]
3 years ago
9

Simplify the expression fraction with numerator of the square root of negative four and denominator of the quantity three plus i

minus the quantity two plus three times i. quantity eight plus two times i divided by seventeen quantity negative four plus two times i divided by five quantity four plus ten times I divided by twenty nine quantity eight plus ten times I divided by forty one
Mathematics
2 answers:
Kipish [7]3 years ago
3 0
Does it look like this: \frac{ \sqrt{-4} }{(3+i)-(2+3i)} =  \frac{-2i}{1-2i} or \frac{2i}{2i-1}

Do you need the others?
\frac{-4+2i}{-5} =  \frac{4-2i}{5}
Gre4nikov [31]3 years ago
3 0

Answer:

\frac{-4+2i}{5}  

Step-by-step explanation:

\frac{\sqrt{-4}}{(3+i)-(2+3i)}

simplify the denominator

\frac{\sqrt{-4}}{1-2i}

square root (-4) is +2i , because the value of square root (-1) is 'i'

\frac{+2i}{1-2i}                    

multiply top and bottom by its conjugate 1+2i

\frac{2i(1+2i)}{(1-2i)(1+2i)}  

\frac{2i+4i^2}{1+2i-2i-4i^2}  

The value of i^2 =-1

\frac{2i+4(-1)}{1+2i-2i-4(-1)}  

\frac{2i-4}{5}  

\frac{-4+2i}{5}  




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maks197457 [2]

Answer:

11.53 degrees.

Step-by-step explanation:

ok so we know the hyp and opp sides. this means that it is sin. according to SOHCAHTOA we do sin^-1(2/10). you should get 11.53

6 0
3 years ago
Read 2 more answers
At 106°F, a certain insect chirps at a rate of 67 times per minute, and at 108°F, they chirp 83 times per minute. Write an equat
Step2247 [10]

Answer:

y=8x-781

Here, x represents temperature and y denotes rate of chirping per minute.

Step-by-step explanation:

Let x represents temperature and y denotes rate of chirping per minute.

At 106°F, a certain insect chirps at a rate of 67 times per minute.

Take (x_1,y_1)=(106,67)

At 108°F, they chirp 83 times per minute.

Take (x_2,y_2)=(108,83)

Slope intercept form:

y-y_1=(\frac{y_2-y_1}{x_2-x_1})(x-x_1)

y-67=(\frac{83-67}{108-106})(x-106)\\\\y-67=(\frac{83-67}{108-106})(x-106)\\\\y-67=(\frac{16}{2})(x-106)\\\\y-67=8(x-106)\\y-67=8x-848\\y=8x+67-848\\y=8x-781

3 0
3 years ago
What is the solution to the equation fraction 4 over 5 n minus fraction 1 over 5 equals fraction 2 over 5 n?
photoshop1234 [79]

Answer:

value of n = 2

Step-by-step explanation:

\frac{4}{5n}-\frac{1}{5}=\frac{2}{5n}

We need to solve the above equation.

Find Least Common multiplier from 5n, 5 = 5n

Multiply both sides of the equation by 5n

\frac{4}{5n}*5n-\frac{1}{5}*5n=\frac{2}{5n}*5n\\Solving:\\4 -n = 2\\

Now finding the value of n.

Adding -4 on both sides

4 -n-4 = 2-4\\-n= -2

Multiplying both sides by -1

n = 2

The value of n is 2.

We can verify by putting value of n in the given question.

\frac{4}{5n}-\frac{1}{5}=\frac{2}{5n}\\n=2\\\frac{4}{5*2}-\frac{1}{5}=\frac{2}{5*2}\\\frac{4}{10}-\frac{1}{5}=\frac{2}{10}\\\frac{2}{5}-\frac{1}{5}=\frac{1}{5}\\\frac{2-1}{5}=\frac{1}{5}\\\frac{1}{5}=\frac{1}{5}

So, value of n = 2

5 0
3 years ago
Write the equation 2x2 - 4x + 6 = 1 in standard form and then choose the value of "c."
3241004551 [841]

Answer:

c = 5.

Step-by-step explanation:

2x^2 - 4x + 6 = 1

Subtract 1 from both sides.

2x^2 - 4x + 5 = 0

c = 5.

8 0
3 years ago
A 25.5-g piece of cheddar cheese contains 37% fat, 28% protein, and 4% carbohydrate. the respective fuel values for protein, fat
marta [7]
Thank you for posting your question here at brainly. Below is the solution:

m(fat) = %fat x 25,5 = 0,37 x 25,5 = 9,435 g of fat 

<span>m(protein) = %protein x 25,5 = 0,28 x 25,5 = 7,14 g of protein </span>

<span>m(carbohydrate) = %carbohydrate x 25,5 = 0,04 x 25,5 = 1,02 g of carbohydrate </span>



<span>E = m(protein) x 17 + m(fat) x 38 + m(carbohydrate) x 17 </span>
<span>E = (7,14 x 17) + (9,435 x 38) + (1,02 x 17) </span>
<span>E = 497 kJ</span>
3 0
3 years ago
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