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
shutvik [7]
3 years ago
15

How do you solve quadratic equations?

Mathematics
1 answer:
masha68 [24]3 years ago
8 0
In any equation there is a variable (usually x). In a quadratic equation there is a lot involved.

-B (+or-) sqrt of b^2 - 4 x A x C
________________________  divide it by
               2 x A
                                                   There is usually an original equation that looks like:  Ax^2 + Bx + C = 0    Use the variables from the equation to the left to fill the upper equation.  (You can also look up a better formula if confused).

You might be interested in
NEED HELP ASAP!!!
Kay [80]
A

sorry if its wrong looks reasonable
6 0
3 years ago
Allegra has a cell-phone plan that charges $65 per month and $0.10 for every minute that she uses the phone beyond what her plan
Helga [31]
X0.10. xtimesy (y being every minute) = 8.40 (Money that she spent extra) Well 8.40 divided by 0.10 is 84. so she went 84 mins over
3 0
3 years ago
Read 2 more answers
Find the value of x that will make a||b help ?
nydimaria [60]

Answer:

x=30

Step-by-step explanation:

Find the value of x that will make A and B parallel

For A & B to be parallel, the interior angles must be supplementary, i.e.

4x+2x = 180

6x=180

x=30

When x=30, the interior angles are 120 and 60 which are supplementary.

4 0
3 years ago
Find a formula for the sum of the first n even positive integers.
melisa1 [442]
So even postive integers are by defention in form 2k where k is a natural number so
let the sum of even integers to n=S
S=2(1+2+3+4+5+6+7+8+......+k-1+k
divide bith sides of equation 1 by 2
0.5S=1+2+3+4+5+...........+k-1+k
S=2(k+(k-1)+..............................+2+1)
divide both sides of equation 2 by 2
0.5S=k+k-1+..............................+2+1)
by adding both we will get
___________________________
S=(k+1)(k)
so the sum will be equal to
S=
{k}^{2}  + k
so let us test the equation
for the first 3 even number there sums will be
2+4+6=12
by our equation 3^2+3=12
gave us the same answer so our equation is correct
7 0
3 years ago
What is the equation of the line
Dovator [93]

Answer:

y=-x+3

Step-by-step explanation:

6 0
2 years ago
Other questions:
  • Can someone please help me!!! I really need help
    13·1 answer
  • The difference of two numbers is 20. their sum is 14. find the numbers. ( show step by step PLEASE )
    14·2 answers
  • Which equation below represents the diagram?
    9·1 answer
  • What do we mean by congruent parabolas?
    13·1 answer
  • 4-30. Micron Technology has sales offices located in four
    8·1 answer
  • Please help!<br><br> In your own words, explain how to bisect an angle
    5·2 answers
  • PLEASE help me with this I really need help...
    13·1 answer
  • A 26-volume encyclopedia(1 volume for each letter) is placed on a bookshelf in alphabetical order from left to right. Each volum
    11·1 answer
  • Use the figure to complete the sentence.
    5·1 answer
  • 1. The circumference of a circle is 16p centimeters.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!