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
astra-53 [7]
3 years ago
13

What are the solutions of x^2 + 121 = 0?

Mathematics
2 answers:
dlinn [17]3 years ago
5 0
The answer would be D. -11i and 11i
Novosadov [1.4K]3 years ago
4 0
To solve this question you need to set up the equation and simplify
x^2 +121 = 0     you need to get the x^2 by itself so subtract 121
x^2 = -121   Now take the square root of both sides. but you can;t take the square root of a negative number which is where the i comes into play. 
 x= + -  11 i 


You might be interested in
Water flows at a rate of 8000 cubic inches per minute into a cylindrical tank. The tank has a diameter of 128 inches and a heigh
beks73 [17]

Answer:

The height of the water = 6.2 in. to the nearest tenth

Step-by-step explanation:

∵ The rate of flows of water into the tank = 8000 in.³/min.

∴ The volume of the water in the tank after 10 min. = 8000 × 10 = 80000 in.³

∵ The water take the shape of the tank

∴ The height of the water = volume of water ÷ Area of the base of the tank

∵ The tank is cylinder with diameter 128 in. and height 72 in.

∴ The area of the base of the tank = π(128/2)²

∴ The height of the water = \frac{80000}{\pi(64)^{2}}=6.2169899

∴ The height of the water = 6.2 in. to the nearest tenth

 

5 0
3 years ago
Which of the following is the most appropriate unit to describe the rate of the cost of gasoline?
malfutka [58]
Dollars per gallon because the dependent quantity is the dollars

Dollars is the dependent quantity because the amount you pay depends on how many gallons you've pumped.
3 0
3 years ago
Read 2 more answers
A circle has its center at the center of a square with 12-inch sides. Using 3.14 for pi, find the area of the square not covered
Dmitrij [34]
So first, find the area of the square. 12x12= 144inches^2
Then find the area of the circle. To do this we use pi x r^2. The radius of the circle is 6 inches. Pi x 6^2 = 113.04inches^2.
144 - 113.04 = 30.6, so your answer is 30.6 inches^2

The circles circumference is worked out by using pi x d. The diameter is 12 inches, so 3.14x12 = 37.68 inches.
The squares perimeter is 12 x 4 = 48 inches.
If you round up the circumference of the circle to the nearest integer, you get 38 inches. The ratio would therefore be, 38:48, which can be rounded down to 19:24 :)
5 0
3 years ago
3.5x + 0.8 = 18.24 - 5.9x​
notka56 [123]

Answer:

x=1.85531914

Step-by-step explanation:

5 0
4 years ago
Read 2 more answers
Nine different numbers between 10 and 200 that have a sum of their digits equal.to 6
Lady bird [3.3K]
One answer (of several) would be 33:  It's between 10 and 200 and the sum of its digits is 6.  Continue this same pattern to identify other answers.
8 0
4 years ago
Other questions:
  • What is the solution of the system of equations?<img src="https://tex.z-dn.net/?f=y%3Dx%2B1%5C%5Cx%2B2y%3D5" id="TexFormula1" ti
    14·1 answer
  • 4. Simplify the following using the quotient rule of exponents:
    15·1 answer
  • the speed of train a is 6 mph slower than the speed of trainb. train a travels 200 miles in the same time it takes train b to tr
    10·2 answers
  • Subsitute<br>y=4x-1<br> y=-3x-8
    7·1 answer
  • A fish tank that holds 80 gallons of water is 55% full. How many gallons are
    10·1 answer
  • Solve the equation.<br> –2x – 18 = 6<br> A. -12<br> B. -3<br> C. -2<br> D. 6
    6·2 answers
  • 13. There are 31 people at a party. The
    10·1 answer
  • HELP PLEASE 50 POINTS!!!!!!!!!!!!!!!
    8·1 answer
  • Find the coefficient of the third term in the expansion of (2x+y)^5
    6·1 answer
  • Help anyone like asap plss​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!