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
balu736 [363]
3 years ago
6

Find the number of real number solutions for the equation. x^2+5x+7=0

Mathematics
1 answer:
koban [17]3 years ago
7 0

Given a quadratic equation ax^2+bx+c=0, we define the discriminant as

\Delta = b^2-4ac

The number of real solutions of the equation depend on the sign of \Delta:

  • If \Delta>0 the equation has two solutions
  • If \Delta=0 the equation has one double solution
  • If \Delta the equation has no real solutions

In this case, we have

\Delta = 25-28=-3

And so this equation has no real solutions.

You might be interested in
in a winter storm, the amount of snowfall is directly proportional to the time it has been snowing. after 4 hours, a total of 7
zzz [600]

Answer:

ok

Step-by-step explanation:

4 0
2 years ago
Please Help me with this
QveST [7]

Answer:

Step-by-step explanation:

set up the equation

1.48=(x-405)/97

x=548.56=549

4 0
3 years ago
Simplify r2 –2r3 + 3r2
kiruha [24]
Final answer: -4r × 12

7 0
3 years ago
Brainliest for whoever explains
makvit [3.9K]

Answer:

A rectangle.

Step-by-step explanation:

The 2 ends of the rectangular prism are squares while the other 4 sides are rectangles. A cross section parallel to the base would be a rectangle as the base is a rectangle as well.

I hope this helps and if you can please mark brainliest.

7 0
3 years ago
Read 2 more answers
Craig scored 12 points in a game. Marla scored twice as many points as Craig but 5 fewer than Nelson scored. Write an expression
asambeis [7]
First write what are given from the question
We write "<span>Craig scored 12 points in a game" as
</span>⇒ c = 12 <em>(first equation)</em>
We write "<span>Marla scored twice as many points as Craig but 5 fewer than Nelson scored" as
</span>⇒ m = 2c <em>(second equation)</em>
⇒ m = n - 5 <em>(third equation)</em>
<span>
Second, find the expression for n based on what we write above
</span>From the second and third equation
⇒ m = m
⇒ n - 5 = 2c
Subtitute from the first equation
⇒ n - 5 = 2c
⇒ n - 5 = 2(12)
⇒ n - 5 = 24

This is the expression to find how many nelson scored
n - 5 = 24
<span>
</span>
4 0
2 years ago
Other questions:
  • Identify whether the graph displays a linear or nonlinear function. Explain why. Graph A On a coordinate plane, graph A goes thr
    8·2 answers
  • 20 points !!!
    9·2 answers
  • (2/3 * 2/3)(1/2 * 1/2) <br> (2/3 * 2/3)(1/2 * 1/2) in fraction form
    8·2 answers
  • If f(x)=4-x^2 and g(x)=6x, which expression is equivalent to (g-f)(3)?
    12·1 answer
  • How can I find #6? Need some help
    13·1 answer
  • 1. Your bank account has -$15 in it. You deposit $5 per day. (a) How much money is in your account after 5 days? Show your work.
    5·2 answers
  • The ramp in the picture makes an angle of 73° with the doorpost. What is the measure of the angle ∠QPR, between the ramp and the
    5·1 answer
  • How did the Buddha achieve enlightenment? *
    9·1 answer
  • Which of the following relations is a function?
    8·2 answers
  • What is the third term in the binomial expansion of (3x y3)4? 54x2y3 18x2y3 18x2y6 54x2y6.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!