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Pavel [41]
3 years ago
6

If a=0 b=0 then complex number a+bi is what type NEED HELP THANKS

Mathematics
2 answers:
notka56 [123]3 years ago
5 0
The answer is a. If there is an i in the equation, then that means “i” is imaginary.
Savatey [412]3 years ago
5 0

Answer:

imaginary

Step-by-step explanation:

b ≠ 0 and a = 0

a + i b  ===> a -> real and b i is imaginary

You might be interested in
Which equation is the result of adding these two equations -2x+4y=17
Katyanochek1 [597]

The right answer is Option C.

Step-by-step explanation:

Given equations are;

-2x+4y=17   Eqn 1

3x-10y= -3   Eqn 2

Adding Eqn 1 and Eqn 2;

(-2x+4y)+(3x-10y)=17+(-3)\\-2x+4y+3x-10y=17-3\\3x-2x-10y+4y=14\\x-6y=14

The right answer is Option C.

Keywords: linear equations, addition

Learn more about linear equations at:

  • brainly.com/question/4939434
  • brainly.com/question/5002251

#LearnwithBrainly

4 0
2 years ago
I need to find the perimeter and area of the regular polygon.
mezya [45]
The area of a polygon is given by the formula Area = ap/2 where a is the length of the apothem and p is the perimeter. The apothem is a line from the center of the polygon perpendicular to a side.

Depending on the formula you know, you can find the length of a side in 1 of 2 ways. 

The first way uses a triangle. Using the radius of the polygon you can create 8 congruent triangles. The center angle will be 360 / 8 = 45 and two side lengths of 20. You can find the length of the base using the law of cosines.

c^2 = 20^2 + 20^2 - 2(20)(20)(cos 45)
c^2 = 400 + 400 - 800(cos 45)
c^2 = 800 - 800(cos 45)
c = sqrt(800 - 800(cos 45)
c = 15.31

The second way is to use this formula:
r = s / (2 sin(180 / n))
20 = s / (2 sin(180/8)
(20)(2)sin(22.5) = s
(40)sin(22.5) = s
s = 15.31

We need to calculate the perimeter. As there are 8 sides (8)(15.31) = 122.48
Now we need to calculate the apothem using

a = S / (2 tan (180 / n)
a = 15.31 / (2 tan (180 / 8))
a = 18.48

Now solve for the area

Area = ap/2
Area = (18.48)(122.48)/2
Area = 1131.72

perimeter = 122.48
area = 1131.72
7 0
3 years ago
The manager of a supermarket wants to obtain information about the proportion of customers who dislike a new policy on cashing c
alex41 [277]

Answer:

n = 61 costumers

Step-by-step explanation:

For calculating the number of costumers he should sample we use the next equation:

n = \frac{z_{1-\alpha/2}^{2}p(1-p)}{E^{2} }

                          Where E is the error that we are prepared to accept, in this  case E = 0.15

How we don't know the value of p, we can estimate it like p = 0.5

∝ = 1-0.98 = 0.02

1-∝/2 = 0.99

z_{0.99} = 2.33

n = \frac{(2.33^{2})(0.5)(1-0.5)}{0.15^{2} }

n = 60.32 costumers

n ≈ 61 costumers

4 0
3 years ago
Someone help?!.........
koban [17]
Answer: y = -2x + 16

Explanation:

Use point slope form:

(y1 - y) = m(x1 - x)

y1 = 6 and x1 = 5 and m = -2

6 - y = -2(5 - x)
6 - y = -10 + 2x
-y = 2x - 10 - 6
-y = 2x - 16
y = -2x + 16
5 0
3 years ago
Question in pic! help asap!! will give brainliest
Viktor [21]

Answer:

a6b40c70

Step-by-step explanation:

a6b40c70

6 0
2 years ago
Read 2 more answers
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