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erik [133]
3 years ago
5

Please help me......................................

Mathematics
1 answer:
Irina18 [472]3 years ago
3 0

Answer:

148.5

Step-by-step explanation:

times all

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NEED HELP PLEASE!
USPshnik [31]

Answer:

(x + (3+5i))^2 = x^2 + 6x + (10x+30)i - 16

Step-by-step explanation:

Complex numbers identity:

The complex numbers identity is:

i^2 = -1

Square of the sum:

(x + y)^2 = x^2 + 2xy + y^2

In this question:

(x + (3+5i))^2

x^2 + 2x(3+5i) + (3+5i)^2

x^2 + 6x + 10xi + 9 + 30i + 25i^2

x^2 + 6x + 9 + (10x+30)i - 25

x^2 + 6x + (10x+30)i - 16

So

(x + (3+5i))^2 = x^2 + 6x + (10x+30)i - 16

5 0
3 years ago
Please help..I dont get this and please Dont put a Link below please.
lianna [129]

Answer:

x = 27, y = 74

Step-by-step explanation:

Hi again :)

Since the angles of 5x + 4 and the one adjacent to x = 14 are corresponding angles, they are equal. That means that (5x + 4) + (x + 14) = 180 degrees.

5x + 4 + x + 14 = 180

6x + 18 = 180

6x = 162

x = 27

Also, the angle (5x + 4) and (2y - 9) are vertical angles, they are equal in value. We know the value of x now, so we'll substitute that in and solve for y.

5(27) + 4 = 2y - 9

135 + 4 = 2y - 9

139 = 2y - 9

148 = 2y

y = 74

As always, lmk if you have questions.

3 0
3 years ago
Jerry irks at the skate board shop he is paid at the end of the week. He earns 245.00$ a week plus a 15% commission on each boar
blagie [28]

Answer:

$462.7

Step-by-step explanation:

15% commission on $54

= $8.1

he sell 27 boards so

8.1 × 27=$218.7

so

$245.00+$218.7=$463.7

7 0
2 years ago
How do you write (6)^-2 without exponents?
m_a_m_a [10]
(6)^-2 Is equivalent to 1/36
5 0
3 years ago
Read 2 more answers
What is the quotient of the complex number 4-3i divided by its conjugate?
bazaltina [42]

9514 1404 393

Answer:

  0.28 -0.95i

Step-by-step explanation:

Multiply numerator and denominator by the conjugate of the denominator.

  \dfrac{4-3i}{4+3i}=\dfrac{(4-3i)(4-3i)}{(4+3i)(4-3i)}=\dfrac{7-24i}{25}=\boxed{0.28-0.96i}

_____

<em>Additional comment</em>

If the original number is A∠β, the ratio is 1∠(2β), the square of the unit vector in the same direction as the original.

3 0
2 years ago
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