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
galben [10]
3 years ago
10

Use square roots to solve theequation x2 = -121 over thecomplex numbers.​

Mathematics
1 answer:
balandron [24]3 years ago
5 0

Answer:

x = ±11i

Step-by-step explanation:

x^2 = -121

Take the square root of each side

sqrt(x^2) = sqrt(-121)

sqrt(x^2) = sqrt (-1) *sqrt(121)

We know that the sqrt(-1) is i

x = i ( ±11)

x = ±11i

You might be interested in
What is the solution to -4|-2x+6| = -24
AURORKA [14]
The answer is x1= 0, x2= 6
5 0
3 years ago
In order to remove water from a flooded basement, two pumps, each rated at 40 gallons per minute, are used. After half an hour,
Scrat [10]

Answer:

3600 gallons of water was removed from the basement.

Step-by-step explanation:

Given:

Rate of each pump = 40 gallons/min

We need to find find the number of gallons of water removed from the basement.

Solution:

Now Given:

After half an hour, the one pump burns out.

Now we know that;

1 hour = 60 mins

\frac12 hour = \frac{60}{2}=30\ mins

Now for 30 mins both the pumps were working and removing the water.

So we can say that;

Water remove for first 30 mins = 40\times2\times30=2400\ gallons

Also Given:

the second pump finishes removing the water half an hour later.

So we can say that;

Water removed for next 30 mins = 40\times 30\times1 =1200\ gallons

Now we can say that;

Total water removed from the basement is equal to sum of Water remove for first 30 mins and Water removed for next 30 mins .

framing in equation form we get;

Total water removed from the basement = 2400+1200=3600\ gallons.

Hence 3600 gallons of water was removed from the basement.

6 0
3 years ago
What is the value of b^2 0 4ac for the following equation?<br> 2x^2 0 2x 0 1 = 0<br> 04<br> 0<br> 12
tigry1 [53]
<span>2x^2 - 2x - 1 = 0 a = 2, b = -2, c = -1 b^2 - 4ac = (-2)^2 - 4(2)(-1) = 4 + 8 = 12
so the answer is 12
</span>
3 0
3 years ago
7/8 is 70% of what number?
tino4ka555 [31]
1.25 or 1 1/4 however you want to look at it
3 0
3 years ago
A right triangle has one leg with a length of 48 and a hypotenuse with a length of 50. HELPPPPPP
makkiz [27]

Answer:

14 is the length of the missing side.

Step-by-step explanation:

Use pythagorean theorem.

48^{2}+b^{2}=50^{2}

2304+b^{2}=2500

\sqrt{b^{2}}=\sqrt{196}

b=14

3 0
3 years ago
Read 2 more answers
Other questions:
  • (ApexVS) If two line segments have the same length, which of the following must be true?
    10·2 answers
  • Find an equation of the circle with center at (-9,2) and passing through (2,-2) in the form of (x-A)^2+(y-B)^2=C where A,B,C are
    9·1 answer
  • What are the length, width, and height of a shape?
    9·1 answer
  • Can you show work for all of these and match them
    11·1 answer
  • rita is make chili the recipe calls for 2 3/4 cups of tomatoes. How many cups of tomatoes,written as a fraction greater than one
    8·1 answer
  • Answer either one because I don’t kno how to solve them
    12·1 answer
  • Find the length of the unknown side. Round your number to the nearest tenth.
    12·1 answer
  • (-2t(t+1),<br> t&lt;6<br> g(t) = {<br> ,6&lt;&lt;&lt; 12<br> | 2+2 + 3+<br> .+&gt; 12
    6·1 answer
  • Have 50000 and a increase of 4% each year for 15 years
    7·1 answer
  • PLEASE HELP
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!