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anastassius [24]
3 years ago
8

How is multiplying complex number different from multiplying binomials?

Mathematics
1 answer:
Oksi-84 [34.3K]3 years ago
4 0

Answer:

A complex number is any number that can be written as \greenD{a}+\blueD{b}ia+bistart color greenD, a, end color greenD, plus, start color blueD, b, end color blueD, i, where iii is the imaginary unit and \greenD{a}astart color greenD, a, end color greenD and \blueD{b}bstart color blueD, b, end color blueD are real numbers.

Step-by-step explanation:

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Find BC if B(8, -7) and C(-4,-2)
Studentka2010 [4]

Answer:

13 unit

Step-by-step explanation:

By the distance formula,

The distance between two points (x_1,y_1) and (x_2, y_2) is,

d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

Thus, the distance between B(8,-7) and C(-4,-2) is,

BC=\sqrt{(-4-8)^2+(-2+7)^2}

=\sqrt{(-12)^2+(5)^2}

=\sqrt{144+25}

=\sqrt{169}

=13\text{ unit}

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3 years ago
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3 years ago
Read 2 more answers
If BC= 48 cm and sin
erastovalidia [21]

Using relations in a right triangle, it is found that the length of AC is of 14 cm.

<h3>What are the relations in a right triangle?</h3>

The relations in a right triangle are given as follows:

  • The sine of an angle is given by the length of the opposite side to the angle divided by the length of the hypotenuse.
  • The cosine of an angle is given by the length of the adjacent side to the angle divided by the length of the hypotenuse.
  • The tangent of an angle is given by the length of the opposite side to the angle divided by the length of the adjacent side to the angle.

Researching this problem on the internet, we have that:

  • The opposite leg to angle A is of 48 cm.
  • sin(A) = 0.96.

Hence the hypotenuse is found as follows:

sin(A) = 48/h

0.96 = 48/h

h = 48/0.96

h = 50 cm.

The length of side AC is the other leg of the triangle, found using the Pythagorean Theorem, hence:

x^2 + 48^2 = 50^2

x^2 = \sqrt{50^2 - 48^2}

x = 14 cm.

More can be learned about relations in a right triangle at brainly.com/question/26396675

#SPJ1

6 0
2 years ago
   -x+3-3= -6-3. <br><br>x+2x -x= 6<br>​
maksim [4K]
The answer is: x=-3 and x=3
4 0
3 years ago
What is the area of this figure (4,1)(2,2)(2,-2)(-4,-2)(-2,-5)(2,-5)
V125BC [204]

Answer:

The area of this figure is 45 square units.

8 0
3 years ago
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