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
Alborosie
2 years ago
6

Which expression is equivalent to the square root of -80?

Mathematics
1 answer:
Viktor [21]2 years ago
5 0

Answer:

c is the correct answer

You might be interested in
Find the cube roots of 125(cos 288° + i sin 288°)
kow [346]
Let r(cos O + i sin O)  be a cube root of 125(cos 288 + i sin 288)
then
r^3(cos O + i sin O)^3  =  125(cos 288 + i sin 28)

so r^3 = 125  and  cos 3O + i sin 3O  =  cos 288 + i sin 288

so r  = 5  and 3O = 288 + 360p and O = 96 +  120p

so one cube root is   5 (cos 96 + i sin 96)

Im a little rusty at this stuff Its been a long time.

Im not sure of the other 2 roots

sorry cant help you any more


3 0
2 years ago
Read 2 more answers
#9. Solve: 8x + 5 = 3x + 15<br><br> X = 4<br> x = 2<br> x = 20/11<br> x = 20
Jobisdone [24]

Answer:

x = 2

Step-by-step explanation:

8x + 5 = 3x + 15

8x - 3x + 5 = 3x - 3x + 15

5x + 5 = 15

5x + 5 - 5 = 15 - 5

5x = 10

5x / 5 = 10 / 5

x = 2

6 0
2 years ago
Here is a rectangle which has a width of x cm. x cm
miskamm [114]

Answer:

278.25 cm2

Step-by-step explanation:

If the width of the rectangle is x (cm), as the length is 8cm longer, so that the length of the rectangle is: x + 8 (cm).

In the attached image, we can see the length of each side. Total length of the sides are 90 cm.

=> (x + x + 8) + x + 8 + (x+8) + (x + x + 8) + x + 8 + (x +8) = 90

=> 8x + 48 = 90

=> 8x = 90 - 48 = 42

=> x =42/8 = 5.25 (cm)

=> The width of the rectangle is 5.25cm

=> The length of the rectangle is: 5.25 + 8 = 13.25 cm

=> The area of one rectangle is: Length x Width = 5.25 x 13.25 = 69.5625 cm2

As the 8-sided shape is made from 4 rectangles, so that:

Area of 8 sided shape = 4 x Area of the rectangle = 4 x 69.5625 = 278.25 cm2

6 0
3 years ago
Math (2) Help please
eduard
What am i supposed to help with, can you show me?

8 0
3 years ago
the small submarine is -1,320 feet in relation to sea level. the submarine needs to be 180 feet below sea level in 60 minutes. h
Talja [164]
I think the answer is -1323
4 0
3 years ago
Read 2 more answers
Other questions:
  • A swimmer swam 3 5/16 miles today and 2 7/16 miles yesterday.
    8·1 answer
  • Increase 48m by 20% ??????????????????????????////
    12·2 answers
  • Which graph represents a function
    10·2 answers
  • Marissa created a graph to show her hair growth since her last haircut. Which table represents the same relationship?
    6·2 answers
  • Your mother has asked for your help. She would like to save up $30,000 to take your family on a trip in 3 years. She wants to ma
    11·2 answers
  • Please help me and also show your work 10 points 3(3C2)
    13·1 answer
  • Keisha's team has won 18 games and lost 12 so far this season. What is the approximate probability that her team wins the next g
    15·2 answers
  • What is his help me please
    13·1 answer
  • A brother is 3 years older than his sister. Five years ago, the ratio of their ages was 4 : 3. Find the boy age.
    13·1 answer
  • I dont know this one to help i put brainliest for the best answer and correct one
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!