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
Inga [223]
3 years ago
10

Factor this equation 4x^2+12x-7

Mathematics
1 answer:
Levart [38]3 years ago
3 0
4x^2+12x-7=0\\\\a=4;\ b=12;\ c=-7\\\Delta=b^2-4ac\\\\\Delta=12^2-4\cdot4\cdot(-7)=144+112=256 \ \textgreater \  0\\\\therefore\\x_1=\dfrac{-b-\sqrt\Delta}{2a}\ and\ x_2=\dfrac{-b+\sqrt\Delta}{2a}\\\\\sqrt\Delta=\sqrt{256}=16\\\\x_1=\dfrac{-12-16}{2\cdot4}=\dfrac{-28}{8}=\boxed{-\dfrac{7}{2}}\\\\x_2=\dfrac{-12+16}{2\cdot4}=\dfrac{4}{8}=\boxed{\dfrac{1}{2}}
You might be interested in
the equation of a wave is given as y=0.5sin(3πx + 50πt). when x and y are in metres and t is in seconds. Find the amplitude, the
Crazy boy [7]

if they are optional

all are correct

<h3>step by step instructions:</h3>

Correct option is

D

All are correct

the equation of a given progressive wave is

y=5sin(100πt−0.4πx) ......(i)

The standard equation of a progressive wave is

y=asin(ωt−Kx) ...(ii)

Comparing (i) and (ii), we get

a=5m,ω=100π rad s

−1

,k=o.4πm

−1

도움이 되기를 바랍니다. :)

좋은 하루 되세요 :)

가장 똑똑한 것으로 표시 :)

4 0
3 years ago
Whats 9 + 19 <br>please I need help
deff fn [24]
28 hope that helped...
8 0
3 years ago
Read 2 more answers
--8W + 5 = -43<br> what’s this?
nataly862011 [7]

Answer:

it is the equation which you have to solve.

3 0
3 years ago
Two balls are drawn in succession out of a box containing
victus00 [196]
There are a total of 8 balls 

The probability of drawing a white ball is 4/8 on the first draw.
If you replace the ball then the probability will still be 4/8 for a white ball, since these events are independent of each other you multiply 4/8 x 4/8 = 16/64 or 1/4 then the probability of drawing at least 1 red ball with replacement is 1 - 1/4 = 3/4

Now without replacement:
the probability of drawing a white ball is 4/8 since you don't replace the ball then the probability of drawing a white ball the second time is 3/7 again multiply these two probabilities: 4/8 x 3/7 = 12/56 the the probability of drawing at least 1 red ball is 1- 12/56 = 44/56 or 11/14
4 0
3 years ago
Which trinomial is factored? (help, it's a timed test and i've only got 24 minutes left!)
ozzi

Answer:

X^2 +x -6 or the last option

Step-by-step explanation:

6 0
2 years ago
Other questions:
  • What is the perimeter of rectangle ABCD on the coordinate plane? coordinate grid
    14·2 answers
  • What is the average of 3.28+6.90+5.30+12.00+4.77
    15·1 answer
  • Which sequence of transformations will result in similar, but not congruent, figures?
    8·2 answers
  • 41.2 x 1.5. Then explain where the decimal point should go and why
    14·2 answers
  • 40000 mg = 10x g. what is value of x
    10·1 answer
  • if the sum of the measures of the interior angles of a polygon is twice the sum of its exterior angles, how many sides does it h
    9·1 answer
  • Let me know if u cant see the picture
    13·1 answer
  • Paco rides his bike for hour. He wants to ride his bike for 1 hour total
    5·2 answers
  • Help will give branliest 15 pointss
    15·2 answers
  • What is 4+(−1 2/3) simplified?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!