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
nasty-shy [4]
4 years ago
7

Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth. –2y2 + 6y = –2

Mathematics
1 answer:
Volgvan4 years ago
5 0
For this case we have the following equation:
 -2y2 + 6y = -2
 Rewriting we have:
 -2y2 + 6y + 2 = 0
 Using the quadratic formula we have:
 x = (- b +/- root (b ^ 2 - 4 * a * c)) / (2 * a)
 Substituting values:
 x = (- (6) +/- root ((6) ^ 2 - 4 * (- 2) * (2))) / (2 * (- 2))
 Rewriting:
 x = (- 6 +/- root (36 + 16)) / (- 4)
 x = (- 6 +/- root (52)) / (- 4)
 x = (- 6 +/- root (4 * 13)) / (- 4)
 x = (- 6 +/- 2 * root (13)) / (- 4)
 x = (- 3 +/- root (13)) / (- 2)
 The roots are:
 x1 = (- 3 - root (13)) / (- 2)
 x2 = (- 3 + root (13)) / (- 2)
 Rewriting:
 x1 = -0.3
 x2 = 3.3
 Answer:
 
–0.3, 3.3
You might be interested in
The table of values shown below represents a linear function. Which of these points could also be an ordered pair in the table,
Gennadij [26K]

Answer:

<h3>B</h3>

Step-by-step explanation:

not sure if i am right but go off process of elimination

A is a not it to get slope you need to do Y=Mx+b because the slope should be 1.3 and if you get the deciml form of 3 over 9 it would be 0.75

and if you do same process on all of then you will see it is B

4 0
3 years ago
Harrison plays a game in which he uses a net to catch balls that are randomly launched from holes in the ground. The height of o
aleksandr82 [10.1K]
3 sishsusbsusbsusnsjsnsn
7 0
3 years ago
Find the value of x. Round to the nearest tenth <br> PLEASE HELP
ololo11 [35]

Answer:

x = 38.2°

Step-by-step explanation:

<u> sin 27° </u>  =  <u>  x°  </u>

    11             15

15 · (sin 27°) = 11 · x°

cross-multiply:

6.81 = 11x

6.81 / 11 = x

x = 0.619

sin^-1 (0.619) = 38.2°

3 0
3 years ago
-4 + 4d + 17 = 33<br> D = ?
cricket20 [7]

Answer:

3?

Step-by-step explanation:

I think it is 3, because...

33 - 17 = 16

16 - 4 = 12

12/4 = 3

???

7 0
3 years ago
18+m/4=24 solve for m
Gemiola [76]
18 + m/4 = 24

Subtract 18 from each side:

m/4 = 6

Multiply each side by 4 :

<em>m = 24 </em>
4 0
4 years ago
Read 2 more answers
Other questions:
  • Suppose LMN=PQR<br> Which congruency statements are true
    7·1 answer
  • 1. The linear equation y = 3x tells us that this line is going to be more vertical or horizontal? Explain.
    13·2 answers
  • Fourth-eight is what percent of 60
    13·2 answers
  • The Appalachian Trail is about 2175 miles long.If a hiker averages 12 miles each day, how long will it take her to hike the leng
    14·2 answers
  • What is value of x?<br><br><br><br> Enter your answer in the box.<br><br> x =
    6·1 answer
  • What is the value of x?
    6·2 answers
  • Find the distance between these two points (5,9) and (-7,-7)
    12·1 answer
  • If 2x + 1=7 what is the value of x​
    7·2 answers
  • Please help I dont get it :(​
    8·1 answer
  • Help me plz:3 tahnk you!!
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!