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
Serjik [45]
2 years ago
13

Solve the quadratic y = −x^2 + 4x + 1 with steps plz!

Mathematics
1 answer:
frez [133]2 years ago
7 0

Answer:

x = -0.24 or 3.73

Step-by-step explanation:

\frac{-b + \sqrt{b^{2} -4ac } }{2a} (There's supposed to be a ± between '-b' and the square root)

x^{2} + 4x + 1 ( ax^{2} + bx + c )

a = -1 ( there's no number before x^{2} so its 1 )

b = 4

c = 1

Substitute into the quadratic equation.

\frac{-4 + \sqrt{4^{2} -4x1x-1 } }{2x-1} ( the x is just the multiplication sign )

=  \frac{-4 + \sqrt{{16} +4 } }{-2}

\frac{-4 + \sqrt{{20} } }{-2} = -0.24    [OR]     \frac{-4 - \sqrt{{20} } }{-2} = 3.73

( The answers are to 2 decimal places )

You might be interested in
PLEASE HELP ME WITH THIS QUESTION
bonufazy [111]

Answer:

y-k

x-h

Step-by-step explanation:

Given E &D, F would be at (x, k).

That means E to F would be y-k.

And F to D would be x-h.

I assume you don’t need to find E to D, since that’s just r. (You could use the Distance Formula or Pythagoreans theorem to come up with and equation, but it wouldn‘t be one of those listed.)

7 0
3 years ago
HELP! WILL MARK BRAINLIEST!
posledela

Answer: C

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
an airport offers two shuttles that run on different schedules.If both shuttles leave the airport at 4:00 p.m.,at what time will
otez555 [7]

What are both of their schedules? If they are completely different, then the next time they will leave together is 4:00 pm the next day


3 0
3 years ago
George’s parents are going on a cruise and are concerned about paying their bills while they are gone because they will not have
Sergio [31]
Im thinking it would be automatic withdrawal
3 0
3 years ago
Read 2 more answers
Find the slope of the line​
vladimir1956 [14]

Answer:

The slope is 3

Step-by-step explanation:

Rise / Run

3 / 1

= 3

7 0
3 years ago
Read 2 more answers
Other questions:
  • An object was thrown upward from the top of an 80ft tower. The height h of the object after t seconds is represented by the quad
    13·2 answers
  • Write the slope e-intercept from of the equation of the line through the given point with the given slope. Please show your work
    15·1 answer
  • A car travels 24 miles every half hour. how fast is it going?
    5·1 answer
  • 5y+3+4x identify parts in an algebraic expression
    13·1 answer
  • The points J, K, L and M all lie on the same line segment, in that order, such that the ratio of JK:KL:LMJK:KL:LM is equal to 1:
    5·1 answer
  • Place these numbers in order from least to greatest:<br><br> 16/5 -3 6 3.1 -2.5 1/4 -3/4 -3/8
    9·1 answer
  • What is the solution to the equation 4+ 5 = 3-1t+5
    12·1 answer
  • -60+x-23=70<br> Need help
    14·1 answer
  • In parallelogram ABCD below, AC is a diagonal, the
    14·1 answer
  • URGENT
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!