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
enot [183]
3 years ago
14

What is the solution of the equation when solved over the complex numbers?

Mathematics
1 answer:
kumpel [21]3 years ago
3 0

Answer:

x=+i\sqrt{20}\approx+4.472i

x=-i\sqrt{20}\approx-4.472i

Step-by-step explanation:

Starting from x^2+20=0, we do x^2=-20, which means x=\pm\sqrt{-20}, which can be written as x=\pm\sqrt{(-1)(20)}, which gives us x=\pm\sqrt{(-1)}\sqrt{(20)}, which we know is x=\pm i \sqrt{(20)}, so our solutions are:

x=+i\sqrt{(20)}

x=-i\sqrt{(20)}

Which can be approximated to:

x\approx+4.472i

x\approx-4.472i

You might be interested in
Lonnie plans to join the gym. He must pay a $35 membership fee. He will
mash [69]

Answer:

5

Step-by-step explanation:

The slope will be the constant amount that the cost increases by each month.

In this situation, 5 is the slope, because he has to pay $5 each month.

35 is not the slope, and is instead the y intercept. This is because this is the cost at 0 months, since it is the membership fee.

So, the correct answer is 5.

4 0
2 years ago
The daytime temperature in Pinedale was 7 1/2 degrees Celsius yesterday. Today the temperature dropped to -3 degrees Celsius. Th
shtirl [24]

Answer:

-10.5 deg

Step-by-step explanation:

Yesterday's temp = 7-1/2 deg (or 7.5 deg)

Today's temp = -3 deg

net change = today's temp - yesterday's temp

= -3 - 7.5 = -10.5 deg

4 0
3 years ago
Read 2 more answers
Marie is purchasing a $108,000 home with a 30 year ortgage at 5.25%. What is her monthly principal and interest payment
schepotkina [342]

Answer:

Monthly interest rate is r=0,004375

Monthly principal c=590,625

Step-by-step explanation:

Monthly interest payment rate :

r=\frac{5.25}{12}:100=0,0004375

Now, we need to find monthly principal payment : c=\frac{rP}{1-(1+r)^{-N}}

Use this rule : N=30*12=360

P=108000

r=0,004375

c=\frac{0.004375*108000}{1-(1+0.004375)^{-360}} =\frac{472.5}{0.8}=590,625

5 0
3 years ago
Read 2 more answers
Triangle ABC is represented by the drawing below.
zhannawk [14.2K]

Step-by-step explanation:

Therefore,

(x+20) + (x-10) + (2x-30) = 180° (Sum of interior angles of a triangle)

Or, x+x+2x+20-10-30 = 180°

Or, 4x-20 = 180°

Or, 4x= 180+20

Or, 4x= 200°

Or, x= 200°/4

Therefore, x= 50°

So,

(x+20)

= 50+20

=70°

(x-10)

= 50-10

40°

(2x-30)

= 2×50-30

=100-30

=70°

Hope it helped, If it did, please mark it as the brainliest answer :)

3 0
3 years ago
Help me please thank you
Snezhnost [94]
Point A is at (-5.1 , 3.3)
3 0
3 years ago
Other questions:
  • Consider the recursively defined function below. f(1)=-5.25 f(n)=f(n-1)+1.75, for n=2,3,4,.... Create the first five terms of th
    15·1 answer
  • Three friends, Lisa, Carl, and Brian are comparing the number of gold coins they have earned in the Wizard World video game. Bri
    11·1 answer
  • Solve the equation, round number the the nearest hundredth if needed.
    15·1 answer
  • A thin tube stretched across a street counts the number of pairs of wheels that pass over it. A vehicle classified as type A wit
    7·1 answer
  • Choose the word that makes the sentence true. The first digit in the quotient 1,875 ÷9
    11·1 answer
  • Maria has c boxes of 10 pencils. The teacher gives her another 20 pencils. How many pencils does she have altogether?
    10·2 answers
  • Condense the expression into a<br> single logarithm and simplify.<br> log26 - log24
    15·1 answer
  • The advertised price of a new car is dollars. The dealership is offering a $2000 rebate and a 10% discount off the price of the
    13·2 answers
  • In 24 attempts, your classmates made perfectly parallel lines 0 times. Making parallel lines is difficult!
    11·1 answer
  • yler’s brother earns a commission. He makes `2.5\%` of the amount he sells. Last week, he sold `\$9,000` worth of shoes. How muc
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!