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emmainna [20.7K]

3 years ago

8

2 and 3 pleeeeeeeeeease

1 answer:

Marianna [84]3 years ago

3 0

I am not sure how to do number 2 because I haven't done it in a while but I can help with number 3.

3. (4+5i) - (6-2i) = (4-6) + (5i+2i) ~collect like terms

(4+5i) - (6-2i) = -2 + 7i ~simplify

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Which equation below can be used to determine the missing angle in the triangle?

Sedaia [141]

Answer:You can use this fact to solve for the missing angle of a triangle. ... Remember -- the sum of the degree measures of angles in any triangle equals 180 degrees. Below is a picture of triangle ABC, where angle A = 60 degrees, angle B = 50 degrees and angle C = 70 degrees. ... Let x = the degree measure of each angle.

Step-by-step explanation:

6 0

3 years ago

If X²⁰¹³ + 1/X²⁰¹³ = 2, then find the value of X²⁰²² + 1/X²⁰²² = ?

enyata [817]

Step-by-step explanation:

$\bf➤ \underline{Given-} \\$

$\sf{x^{2013} + \frac{1}{x^{2013}} = 2}\\$

$\bf➤ \underline{To\: find-} \\$

$\sf {the\: value \: of \: x^{2022} + \frac{1}{x^{2022}}= ?}\\$

$\bf ➤\underline{Solution-} \\$

<u>Let us assume that:</u>

$\rm: \longmapsto u = {x}^{2013}$

<u>Therefore, the equation becomes:</u>

$\rm: \longmapsto u + \dfrac{1}{u} = 2$

$\rm: \longmapsto \dfrac{ {u}^{2} + 1}{u} = 2$

$\rm: \longmapsto{u}^{2} + 1 = 2u$

$\rm: \longmapsto{u}^{2} - 2u + 1 =0$

$\rm: \longmapsto {(u - 1)}^{2} =0$

$\rm: \longmapsto u = 1$

<u>Now substitute the value of u. We get:</u>

$\rm: \longmapsto {x}^{2013} = 1$

$\rm: \longmapsto x = 1$

<u>Therefore:</u>

$\rm: \longmapsto {x}^{2022} + \dfrac{1}{ {x}^{2022} } = 1 + 1$

$\rm: \longmapsto {x}^{2022} + \dfrac{1}{ {x}^{2022} } = 2$

★ <u>Which is our required answer.</u>

$\textsf{\large{\underline{More To Know}:}}$

(a + b)² = a² + 2ab + b²

(a - b)² = a² - 2ab + b²

a² - b² = (a + b)(a - b)

(a + b)³ = a³ + 3ab(a + b) + b³

(a - b)³ = a³ - 3ab(a - b) - b³

a³ + b³ = (a + b)(a² - ab + b²)

a³ - b³ = (a - b)(a² + ab + b²)

(x + a)(x + b) = x² + (a + b)x + ab

(x + a)(x - b) = x² + (a - b)x - ab

(x - a)(x + b) = x² - (a - b)x - ab

(x - a)(x - b) = x² - (a + b)x + ab

6 0

3 years ago

Solve for y<br> 3x -2y = 8

Lynna [10]

Answer:

y=3/2x-4

Step-by-step explanation:

3x-2y=8

-2y=-3x+8

y=3/2x-4

8 0

3 years ago

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HELP ME PLEASEEEEEEEEEE

Len [333]

Answer:

9 units

Step-by-step explanation:

3 0

3 years ago

TRUE OR FALSE , When you divide the numerator of a fraction by the denominator you always get a terminating decimal?

goldfiish [28.3K]

Answer: false.

Step-by-step explanation:

it's only a terminating decimal if you end up with a remainder of 0.

5 0

3 years ago

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