1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
aev [14]
3 years ago
10

What is a definition of complex number?​

Mathematics
2 answers:
antoniya [11.8K]3 years ago
6 0

Answer:

Step-by-step explanation:

A complex number is a number that contains a real part and an imaginary one .

Mathematical expression : a+bi xhera a and b are real numbers and i the solution of an equation like x²) -1 ..

RUDIKE [14]3 years ago
6 0

Answer:a complex number is a number that can be shown in a form a+bi when a and b are real numbers and i is the answer to the equation x^2=-1

You might be interested in
A point that is 7 units from the y-axis is reflected across the y-axis. What is the distance of this new point from the y-axis?
Alona [7]
The new distance is -7on the y axis

7 0
3 years ago
As an estimation we are told £3 is €4.
vova2212 [387]

Answer:

To solve the above problem we will use the unitary method as follows

As estimated  If £ 3 is equivalent to € 4

Then, £ 1 will be equivalent to = € \frac{4}{3}

£ 64.60 will be equivalent to = € \frac{4}{3} \times 64.60 = 1.3333 \times 64.60 = 86.1311

Now you have to round the answer up to 2 decimal points to get the final answer

€ 86.1311 ≈ € 86.13

Thus, £ 64.60 is approximately equal to  € 86.13.

Step-by-step explanation:

hope this helps if not let me now

3 0
2 years ago
A street light is at the top of a 25 ft pole. A 4 ft tall girl walks along a straight path away from the pole with a speed of 6
Burka [1]

Answer:

Tip of the shadow of the girl is moving with a rate of 7.14 feet per sec.

Step-by-step explanation:

Given : In the figure attached, Length of girl EC = 4 ft

           Length of street light AB = 25 ft

           Girl is moving away from the light with a speed = 6 ft per sec.

To Find : Rate (\frac{dw}{dt}) of the tip (D) of the girl's shadow (BD) moving away from th

light.

Solution : Let the distance of the girl from the street light is = x feet

Length of the shadow CD is = y feet

Therefore, \frac{dx}{dt}=6 feet per sec. [Given]

In the figure attached, ΔAFE and ΔADE are similar.

By the property of similar triangles,

\frac{x}{21}=\frac{x+y}{25}

25x = 21(x + y)

25x = 21x + 21y

25x - 21x = 21y

4x = 21y

y = \frac{4x}{21}

Now we take the derivative on both the sides,

\frac{dy}{dt}=\frac{4}{21}\times \frac{dx}{dt}

= \frac{4}{21}\times 6

= \frac{8}{7}

≈ 1.14 ft per sec.

Since w = x + y

Therefore, \frac{dw}{dt}= \frac{dx}{dt}+\frac{dy}{dt}

\frac{dw}{dt}=6+1.14

= 7.14 ft per sec.

Therefore, tip of the shadow of the girl is moving with a rate of 7.14 feet per sec.

3 0
3 years ago
Two siblings set up a lemonade stand. Each half hour, the siblings record the number of cars, X, that pass by and the total amou
Semenov [28]
It’s to prove of the pounds and the congress to put each three out
7 0
3 years ago
Ms. Adler bought x bags of
OLga [1]

Answer:

Step-by-step explanation:

Number of bags = Total money spent / Cost of each bag

x = number of bags of chips

Simply divide 17.50 by 1.25 to work out how many bags of chips he can purchase.

Number of bags = Total money spent / Cost of each bag

x = \frac{17.50}{1.25} = ?

8 0
3 years ago
Read 2 more answers
Other questions:
  • Sam solved the following problem:
    14·2 answers
  • What is the postulate or theorem that proves that arc AC is congruent to arc DB
    11·2 answers
  • 1. A coin-operated drink machine was designed to discharge a mean of 7 ounces of coffee per cup. In a test of the machine, the d
    13·1 answer
  • I have no clue what to do. can anyone please help me;​
    15·1 answer
  • I need help with question 1.
    15·1 answer
  • Help<br><img src="https://tex.z-dn.net/?f=8x%20-%20%283%20%2B%202x%29" id="TexFormula1" title="8x - (3 + 2x)" alt="8x - (3 + 2x)
    14·1 answer
  • Translate the sentence into an equation
    5·2 answers
  • C) A Square Classroon with a length of 10cm​
    6·2 answers
  • Sam bought a jacket marked $85.00 and a sweater marked $60.00. If the store was having a 20% off sale on all items, how many dol
    7·1 answer
  • What is an<br> Answer:<br> equation of the line that passes through the points (-2, 7) and (-8, 4)?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!