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
Anni [7]
3 years ago
13

Which of the following equations have complex roots?

Mathematics
1 answer:
valkas [14]3 years ago
8 0

Answer:

B

Step-by-step explanation:

A:

Completing the square:  (x+ 7/2)^2 = -2 + 49/4 = 41/4, in the next step you'll be square rooting a positive number so it'll have real roots.

B:

Completing the square:  (x+3/2)^2 = -9 + 9/4 = -27/4, you'll next be square rooting a negative number, so it'll have complex roots

C:

Completing the square:  (x-5/2)^2 = -1 + 25/4 = 21/4, next you'll square root a positive number, so real roots

D:

Completing the square: (x+7/2)^2 = 2 + 49/4 = 57/4, square root a positive number, so real roots.

You might be interested in
Quick algebra 1 question for 50 points!
snow_tiger [21]

Answer:

Yes.

Step-by-step explanation:

Yes, the given line can be used to make reasonable predictions of the number of cheese pizzas that will be sold, since the scatter points clearly show a trend.

As time goes on, the number of pizzas sold is getting bigger, and the trend is what created the line.

The data was taken over 8 consecutive weeks, so we can assume that it can be used in our prediction.

Since the trend has been pretty consistent over periods of time, we can expect it to continue in the upcoming weeks.

3 0
2 years ago
|8m| = 104 absolute value
DENIUS [597]

Answer:

m=13

Step-by-step explanation:

Ok

l8ml=104

8m=104

⁻⁻⁻  ⁻⁻⁻

8        8

m=13

6 0
3 years ago
6) A bag contains 4 red marbles, 3 green, 5 blue. Someone offers you a game : If you pick red marble you win $4, if blue loose $
fomenos

Answer:

11

Step-by-step explanation:

i just need 11 more than ill be fine

3 0
2 years ago
Suppose that g(x)=f(x)+3. Which statement best compares the graph of g(x) with the graph of f(x)?
Nonamiya [84]

Answer:

He said points

Step-by-step explanation:

I can get points for nothing

8 0
2 years ago
Can a triangle be made from the measurements of 4.5 in, 8.3 in, 13.7 in? And if it can make a triangle what kind is it? ie. acut
sineoko [7]
No it can’t make a triangle
7 0
3 years ago
Other questions:
  • Evaluate the function f(x)=2x-2 when x equals negative 1<br> A. -4<br> B. -3<br> C. 0<br> D. 4
    15·1 answer
  • Evaluate the expression when<br> c=5/8<br> x= -3/16<br> 4x-c<br> Write your answer in simplest form.
    14·1 answer
  • The number of milligrams of a certain medicine a veterinarian gives to a dog varies directly with the weight of the dog. If the
    7·2 answers
  • Why is new york considered a man made feature? Please use complete sentences and must be a paragraph thanks
    14·1 answer
  • Please help please please help
    8·1 answer
  • Find the area of this parallelogram. be sure to include the correct unit in your answer
    6·2 answers
  • حل المعادلتين باستتخدام المعادله المصفوفه او الصف البسيط<br> ٢م-ل=1<br> م+ل=٢-
    14·1 answer
  • What is the explicit formula for this sequence? <br> -6, -2, 2, 6, 10,....
    14·1 answer
  • Solve for x:122+4x=3x+87​
    8·2 answers
  • The growth of bacteria is modeled as P = P0ert. In a sample culture, the bacteria grows at a rate of 6 percent per minute. If th
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!