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
kati45 [8]
3 years ago
12

PLEASE HELP ASAP 25 PTS + BRAINLIEST TO RIGHT/BEST ANSWER

Mathematics
2 answers:
yarga [219]3 years ago
8 0

Answer:

x = -2 ±i sqrt(6)

Step-by-step explanation:

x^2 +4x+10 = 0

We will complete the square

Subtract 10 from each side

x^2+4x +10-10 = -10

x^2+4x= -10

b = 4

Take b/2 and then square it

4/2 = 2 2^2 = 4

Add 4 to each side

x^2+4x+4= -10+4

The left side is rewritten as (x+b/2)^2

(x+2)^2 = -6

Take the square root of each side

sqrt((x+2)^2) = sqrt (-6)

x+2 = ±i sqrt(6)

Subtract 2 from each side

x+2-2 = -2 ±i sqrt(6)

x = -2 ±i sqrt(6)

Julli [10]3 years ago
4 0

Use the quadratic formula -b+/-√b^2 -4(ac) / 2a

-4 +/- √(4^2 - 4(1*10) / (2*1)

X = -2 +/- i√6

You might be interested in
The general manager, marketing director, and 3 other employees of Company A are hosting a visit by the vice president and 2 othe
yawa3891 [41]

Solution :

Let the three places be 1, 2, 3, 4, 5, 6, 7, 8

a). Number of the cases when a general manager is the next to a vice president is equal to 7 and the these 2 can be arranged in 21 ways. So the total number of ways = 7 x 2

                  = 14

[(1,2)(2,1) (2,3)(3,2) (3,4)(4,3) (4,5)(5,4) (5,6)(6,5) (6,7)(7,8) (8,7)(7,6)]

Therefore the required probability is

  $=\frac{14}{8!}$

 = $\frac{14}{40320} = 0.000347$

b). The probability that the marketing director to be placed in the leftmost position is

   $=\frac{7!}{8!}$

  $=\frac{1}{8} = 0.125$

c). The two events are not independent because

   $P(A \cap B) \neq P(A) \times P(B)$

  $\frac{12}{8!} \neq \frac{14}{8!} \times \frac{1}{8}$

where A is the case a and B is the case b.

8 0
3 years ago
PLSSSSSSSS
Klio2033 [76]

Answer:

Step-by-step explanation:

https://drive.google.com/open?id=1QAvmjDjuwgFX0mUdHlWmqMSCJcOVMw2X

6 0
2 years ago
Which term best describes the statement given below?
GarryVolchara [31]
B is as it is a logical form of reasoning. if a=50, b=30, c=20
if a > b and b > c then a > c
3 0
3 years ago
Read 2 more answers
I need help someone look at the picture
Natalka [10]

Answer:

2

Step-by-step explanation:

The outlier here is greatly above all of the others, the mean is the sum of all of the numbers/the amount of numbers. So, if we exclude the outlier, the sum of all of the numbers would decrease

3 0
3 years ago
Read 2 more answers
What is 12,140 X 4.0
kondor19780726 [428]

Answer: 48560

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • A bottle of detergent that will wash 32 loads of laundry will cost 4.80. A bottle that will wash 50 loads cost 7.00.which is the
    8·1 answer
  • right in equation in standard form of the line that passes through the points parentheses -4, two parentheses and parentheses th
    13·1 answer
  • WILL GIVE YOU BRAINLIEST
    7·1 answer
  • To which interval would we restrict f(x) = cos (x-π/4) so that f(x) is invertible?
    14·1 answer
  • Find the quotient in simplest form. 7 1/2 divided by 3/3/4
    14·2 answers
  • The original price of a bottle
    5·2 answers
  • (-2, 3), (3, -2), (1, 3), (0, -2)<br> DOMAIN<br> RANGE
    5·1 answer
  • Solve the polynomial x(x-6)=0
    12·1 answer
  • Sarah took the advertising department from her company on a round trip to meet with a potential client. Including Sarah a total
    14·2 answers
  • What is the greatest common factor of 253 and 345?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!