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2 years ago

How do I do question 2?

Mathematics

2 answers:

Sveta_85 [38]2 years ago

6 0

so the right answer is of option C

Look at the attached picture

Hope it will be helpful to you

Good luck on your assignment

~pragya

hichkok12 [17]2 years ago

4 0

Answer:

(x-3) (x+4)

Step-by-step explanation:

2 /(x-3) + 7/( x^2+x-12)

Factor

2 /(x-3) + 7/(x-3)(x+4)

The common denominator is (x-3) (x+4)

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Find z1z2 if z1 = 2/5(cos63° + isin63°) and z2 = 10/3(cos117° + isin117°).

Airida [17]

Answer:

-10/3 is the answer

Step-by-step explanation:

Given are two complex numbers as

$z1=\frac{2}{5} (cos63 + isin63)\\z2=\frac{10}{3} (cos 117 + isin117})$

Recall Demoivre theorem as

(cosA+isinA)(cos A+isin B) = cos(A+B)+isin(A+B)

Hence here we have sum of angles as

A+B = 63+117 =180

$z1z2=\frac{2}{5} \frac{10}{3} (cos180+isin180)$

= $\frac{-10}{3}$

Since sin180=0 and cos 180=-1

7 0

3 years ago

3 litres of water is how many cups? 3 litres of water is how many cups? 1 following 5 answers 5 Report Abuse Are you sure you wa

Valentin [98]

If a cup is a regular sized cup that is 2 deciliters, and 1 liter equals 10 deciliters, that means that 1 liter = 5 cups, which means that 3 liters = 15 cups. If it is a cup that has 0.33 dl, then the correct number would be 9 cups.

8 0

2 years ago

Helpp!! Thank you! Take care!!

alina1380 [7]

Answer:

B or $12.50

Step-by-step explanation:

To get the answer, you have to solve x from the equation 4.5x = 56.25

To solve, you have to divide 4.5 from each side, making the equation look like,

x = 12.5

Hope this helps!!

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3 years ago

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Fynjy0 [20]

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3 years ago

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kompoz [17]

Answer:

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Step-by-step explanation:

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