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
Ilia_Sergeevich [38]
3 years ago
13

Is there anyone here that knows how to solve quadratic equations using the quadratic formula?​

Mathematics
2 answers:
Kay [80]3 years ago
7 0

Answer:

the quadratic formula is x = (-b +_ √b^2 -4ac)/2a

find a, b, and c by this: ax^2 +bx + c = 0

and plug the value into the quadratic formula

Ann [662]3 years ago
5 0

Answer:

Me, I just learned it, I can help

Step-by-step explanation:

Formula:

ax^2 + bx + c

You might be interested in
Let f(x)=x2−2x−4 . What is the average rate of change for the quadratic function from x=−1 to x = 4?
goblinko [34]

Answer:

The average rate of change for f(x) from x=−1 to x = 4 is, 1

Step-by-step explanation:

Average rate A(x) of change for a function f(x) over [a, b] is given by:

A(x) = \frac{f(b)-f(a)}{b-a}

As per the statement:

f(x) = x^2-2x-4

we have to find the average rate of change from x = -1 to x = 4

At x = -1

f(-1) = (-1)^2-2(-1)-4 = 1+2-4 = -1

and

at x = 4

f(4) = (4)^2-2(4)-4 = 16-8-4 = 4

Substitute these in [1] we have;

A(x) = \frac{f(4)-f(-1)}{4-(-1)}

⇒A(x) = \frac{4-(-1)}{4+1}

⇒A(x) = \frac{5}{5}

Simplify:

A(x) = 1

Therefore, the average rate of change for f(x) from x=−1 to x = 4 is, 1

4 0
3 years ago
Read 2 more answers
Triangle A′B′C′ is a dilation of ​triangle ABC​ about point P with a scale factor of 12. Is the dilation a reduction or an enlar
djyliett [7]

Answer:

Enlargement

Step-by-step explanation:

If a scale factor is smaller than 1, it is a reduction, and if it's larger than 1, it's an enlargement.

4 0
3 years ago
Read 2 more answers
In Walmart parking, there are 175 vehicles parked joe figures out that 64% of the vehicles are white. How many vehicles are NOT
aksik [14]

Answer:

63 vehicles are not white

Step-by-step explanation:

Well you know that there are 175 total vehicles, and that 64% of those vehicles are white.  Therefore the remaining percentage of vehicles must not be white.

100%-64%=36%

This means that 36% of the vehicles aren't white.

Now you must find what 36% of 175 is.  The word "of" always signals for multiplication, which is exactly what you need to do here.  First start by converting the percentage into decimal form:

36%=0.36

Now you can multiply

175 x 0.36 = 63

63 Vehicles are not white

5 0
3 years ago
Read 2 more answers
Sin(3pi over 4) = _____
OlgaM077 [116]
If you're using the app, try seeing this answer through your browser:  brainly.com/question/2790456

______________


\mathsf{sin\!\left(\dfrac{3\pi}{4}\right)}\\\\\\ =\mathsf{sin\!\left(\dfrac{3\cdot 180^\circ}{4}\right)}\\\\\\ =\mathsf{sin(135^\circ)}\\\\ =\mathsf{sin(180^\circ-135^\circ)}

=\mathsf{sin(45^\circ)}\\\\ =\mathsf{\dfrac{\sqrt{2}}{2}}\quad\longleftarrow\quad\textsf{this is the answer.}


I hope this helps.=)


Tags:  <em>sine sin common angles trig trigonometry </em>

8 0
3 years ago
Please help with these? thank you
Burka [1]
The answer is the second one; 15y^2–11y
5 0
3 years ago
Other questions:
  • Round 258,177 to the nearest thousand asap !!!!!
    5·2 answers
  • Write 63000 in standard form
    14·2 answers
  • Please help me with math pleaseeeeee!!!
    13·1 answer
  • Jane wants to estimate the proportion of students on her campus who eat cauliflower. after surveying 39 ​students, she finds 4 w
    6·1 answer
  • A researcher wondered whether drivers treat bicycle riders differently when they wear helmets. He rigged his bicycle with an ult
    5·1 answer
  • Please help, I will really appreciate all your help please :(
    9·1 answer
  • What Are the solutions of the following system?
    9·1 answer
  • (2h3 + 6h) + (3h3 - 7h - 3) standard form sum or difference.​
    12·1 answer
  • Help plz plz plz plz i need this
    6·1 answer
  • Simplify: 13x - y - y + 7y - 12x
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!