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
masya89 [10]
4 years ago
14

Solve x2 + 4x + 8 = 0.

Mathematics
2 answers:
Tanzania [10]4 years ago
6 0

Answer:

x= -2 + or - 2i

Step-by-step explanation:

olga_2 [115]4 years ago
4 0

x equals negative 2 plus or minus 2i

You might be interested in
Oil has a volume of 9000cm cubed and a density of 0.8g/ cm cubed. what is the mass of the oil?
OlgaM077 [116]
Density = 0.8 g/cm³

Volume = 9000 cm³

D = m / V

0.8 = m / 9000

m = 0.8 x 9000

m = 7200 g

hope this helps!
5 0
3 years ago
If R is the set of all integers with absolute value less than 10, A is its subset containing all natural numbers less than 10 an
Elza [17]

Answer:

See explanation

Step-by-step explanation:

1. R is the set of all integers with absolute value less than 10, thus

R=\{a\in \mathbb{Z}\ :\ |a|

2. A is its subset containing all natural numbers less than 10, thus

A\subset R\\ \\A=\{b\in \mathbb{N}\ :\ b

3. B is the set of all integer solutions of inequality 2x+5<9 that are less than 10 by absolute value (and therefore, it is also a subset of R). First, solve the inequality:

2x+5

Thus,

B\subset R\\ \\B=\{c\in \mathbb{Z}\ :\ 2c+5

See the diagram in attached diagram.

Note that

A\cup B=R\\ \\A\cap B=\{1\}.

4 0
3 years ago
What is the simplified form of the expression?
zimovet [89]

Answer:

7c^2d-7c+4d-10

Step-by-step explanation:

Start off with the term that has c^2 in it. 5c^2d + 2C = 7c^2d, then since you have multiple choice, the d value differs between the two answer choices that have 7c^2d so you can do +3d +d to get +4d to get the fourth answer choice.

To check your work, you can add/subtract each term to see if you get 7c^2d-7c+4d-10

3 0
3 years ago
What equals to 25 in multiplication?
Masteriza [31]
5 times 5..........................
5 0
3 years ago
Mary is solving the equation 2n – 3 = 83. Her first three steps are shown:
Stells [14]
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
2^n - 3 = 83 
<span>2^n = 86 </span>
<span>ln(2^n) = ln(86) </span>
<span>n*ln(2) = ln(86) </span>
<span>n= ln(86)/[ln(2)] (which is the same as "log base 2 of 86") </span>
<span>n= 6.426264755</span>

7 0
3 years ago
Other questions:
  • How to write 45 percent as a word form
    6·2 answers
  • Mike and Kate plan to save money for their wedding over a 20 month period. They will need to save $8,000 to help pay for the wed
    9·1 answer
  • Plz solve! I need help!
    14·1 answer
  • - 2x+y=2<br> x+6y=-21<br> A) (<br> 34)<br> D) (-3, 4).<br> (-1.4)<br> B) (3.2)
    6·1 answer
  • 1) On a road map, the distance from Louisville to St. Louis is 12 cm. If the map has
    13·2 answers
  • Match function with its corresponding graph
    5·1 answer
  • Y = 2x+3<br> 2x + 5y = 3<br> SOLVE using substitution please show work !
    9·2 answers
  • What is the value of Y
    15·1 answer
  • PLease Help MEE I really need help and will give brainliest
    15·2 answers
  • Question 1<br> Let f(x) = 2x^2 - 3x - 4 and g(x) = x + 5. Find (fg)(x).
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!