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
noname [10]
3 years ago
5

Solve the following quadratic equation using the quadratic formula. Separate multiple answers with a comma if necessary.

Mathematics
1 answer:
Valentin [98]3 years ago
4 0

Answer:

y^2 -4y +6=0

y =\frac{-b \pm \sqrt{b^2 -4ac}}{2a}

Where a = 1, b= -4 ,c =6

And replacing we got:

y = \frac{-(-4) \pm \sqrt{4^2 -4(1)(6)}}{2*1}

And solving we got:

y = \frac{4 \pm \sqrt{-8}}{2} =2 \pm 2\sqrt{2} i

Where i =\sqrt{-1}

And the possible solutions are:

y_1=2 + 2\sqrt{2} i , y_2 = 2 - 2\sqrt{2} i

Step-by-step explanation:

For this case we use the equation given by the image and we have:

-y^2 +4y -6=0

We can rewrite the last expression like this if we multiply both sides of the equation by -1.

y^2 -4y +6=0

Now we can use the quadratic formula given by:

y =\frac{-b \pm \sqrt{b^2 -4ac}}{2a}

Where a = 1, b= -4 ,c =6

And replacing we got:

y = \frac{-(-4) \pm \sqrt{4^2 -4(1)(6)}}{2*1}

And solving we got:

y = \frac{4 \pm \sqrt{-8}}{2} =2 \pm 2\sqrt{2} i

Where i =\sqrt{-1}

And the possible solutions are:

y_1=2 + 2\sqrt{2} i , y_2 = 2 - 2\sqrt{2} i

You might be interested in
What is the surface area of the rectangular prism described by the net below?
dimaraw [331]

Answer:

758

Step-by-step explanation:

758 is the answer sheesh

6 0
2 years ago
Read 2 more answers
The entry tickets at a community fair cost $5 for children and $10 for adults. On a certain day 1000 people we entered in the fa
Hitman42 [59]
580 kids
420 adults


hope this helps

brainliest plz
6 0
3 years ago
Hiking up a mountain, you notice that the air temperature drops 10 degrees every 1000 meters increase in elevation. Write a mult
Elina [12.6K]

 decrease in temperature if you hike up the mountain 3000 meters is  -30° .

<u>Step-by-step explanation:</u>

Here we have , Hiking up a mountain, you notice that the air temperature drops 10 degrees every 1000 meters increase in elevation . We need to find Write a multiplication expression to represent the decrease in temperature if you hike up the mountain 3000 meters. Let's find out:

For every 1000 meters rise in elevation , there is decrease in 10° of temperature . So , For rise in n meters in  elevation , there is decrease in n×10° of temperature i.e

Decrease in temperature = (n/1000)×(-10) i.e.

⇒  (n/1000)×(-10)

⇒ \frac{n}{1000}(-10)

At n = 3000 meters:

⇒ \frac{3000}{1000}(-10)

⇒ 3}(-10)

⇒ -30°  

Therefore ,  decrease in temperature if you hike up the mountain 3000 meters is  -30° .

8 0
3 years ago
Please help.Please show the formula,thanks.
Yuki888 [10]

Answer:

DE=6.3

Step-by-step explanation:

triangles are similar so, its sides and angles are comgruent.

side BC=side DE

side BC=6.3

side DE=6.3

<h3><u>N</u><u>o</u><u>t</u><u>e</u><u>:</u><u>i</u><u>f</u><u> </u><u>y</u><u>o</u><u>u</u><u> </u><u>n</u><u>e</u><u>e</u><u>d</u><u> </u><u>t</u><u>o</u><u> </u><u>a</u><u>s</u><u>k</u><u> </u><u>a</u><u>n</u><u>y</u><u> </u><u>question</u><u> </u><u>please</u><u> </u><u>let</u><u> </u><u>me</u><u> </u><u>know</u><u>.</u></h3>
5 0
2 years ago
What is 0.3 repeating as a fraction in simplest form
NeTakaya
The answer is 3/9 or 1/3 in its simplest form
4 0
3 years ago
Read 2 more answers
Other questions:
  • Is 640 ft or 0.5 mi greater?
    7·2 answers
  • What is the answer (3x - 2)=
    13·1 answer
  • HELP PLEASE write the perimeter of the figure
    14·2 answers
  • In a school there are 500 students and 35 teachers. What is the ratio of students to teachers?
    13·2 answers
  • Kelso is in charge of a bake sale. On each table, t, there will be a platter of 24 cookies and 2 bowls of brownies with b browni
    8·1 answer
  • Please Help ASAP!! Marking Brainliest!! Divide <img src="https://tex.z-dn.net/?f=12x%5E2%20%2B%204x%5E3%20%2B%2018%20%2B%2016x"
    7·1 answer
  • Find the distance between the points (8,-3) and (2, -3).​
    12·1 answer
  • Mariam and Sana are excited that a new store just opened in town! They go together the first day it opens! Each time Mariam goes
    11·1 answer
  • Ms. johnson uses a statistics program to analyze all the data collected by her students during a lab experiment about accelerati
    9·1 answer
  • As a rule of thumb, the sampling distribution of the sample proportion can be approximated by a normal probability distribution
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!