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
lbvjy [14]
3 years ago
12

Please help ASAP! Will give BRAINLIEST! Please read the question THEN answer correctly! No guessing.

Mathematics
1 answer:
ElenaW [278]3 years ago
3 0

Answer:

x =  -2 ±sqrt(7)

Step-by-step explanation:

3x^2 +12 x = 9

Divide each side by 3

3x^2 /3 +12x/3 = 9/3

x^2 +4x = 3

Take the coefficient of x

4

Divide by 2

4/2 =2

Square it

2^2 =4

Add it to each side

x^2 +4x+4 = 3+4

x^2 +4x+4 = 7

(x+2)^2 = 7

Take the square root of each side

x+2 = ±sqrt(7)

Subtract 2 from each side

x+2-2 = -2 ±sqrt(7)

x =  -2 ±sqrt(7)

You might be interested in
The number of gas purchased by four motorist and the corresponding costs are plotted one he coordinate plane. Which of these tab
BARSIC [14]

Answer:

4 IS $1

8 IS $2

12 IS $3

16 IS $4

Step-by-step explanation:

On the coordinate plane it would be a number on the top left and point at a bottom number, the top left is the first number and on the bottom is the last number. Hope that helped!

6 0
3 years ago
5+6(2x-1) <br> i need this like now pls
Crank

Answer:

Step-by-step explanation:

5 + 6 = 11 x 2 - 1 = 21 therefore its 21

5 0
3 years ago
Is 225/15/3 equal to 225/(15/3)?
Andrej [43]
No, because if they were equal the second equation should be 225/(15x3), not (15/3). 
8 0
3 years ago
Read 2 more answers
Which Mean Absolute Deviation represents more consistency? 15.2 or 10.9
Firdavs [7]

Answer:

10.9

Step-by-step Explanation:

The Mean Absolute Deviation of a given data set tells us how far apart, on average, each data value is to the mean of the data set.

The smaller the Mean Absolute Deviation of a given data set is, the closer each data value is to the mean. This also implies less variability of the data set.

Invariably, the smaller the M.A.D, which connotes less variability, the more consistent the data set is.

Therefore, a M.A.D of 10.9 represents more consistency than a M.A.D of 15.2

3 0
3 years ago
PLEASE HELP ME THANK YOU IF U DO
Andrews [41]

Answer:

B (r= 1/6s)

Step-by-step explanation:

If you just work out each option, you'll see that "s" multiplied by 1/6 gets r.

5 0
3 years ago
Other questions:
  • You are challenged to a lucky draw game. If you draw a face card (K, Q, J) from a standard deck of cards, you earn 10 points. If
    15·1 answer
  • What is (1-7x)(1+9x)
    6·2 answers
  • An equation that states two ratios are equivalent
    13·1 answer
  • The owner of a garden center pays $12 for each birdbath. She sells them for 55% more than she
    7·2 answers
  • What is the constant of the expression x2+15x+24y+10?
    15·1 answer
  • 3x^2+15x+25=−3x−2<br>whats the discrimate?​
    5·2 answers
  • What does Arc C D E describe?<br><br> a minor arc<br> a major arc<br> a semicircle<br> a chord
    11·2 answers
  • 3. Which word phrase can be used to represent the algebraic expression 4(21+ n)? (2 point) 4 plus the sumn of 21 and a number »
    11·1 answer
  • The height of a triangle is 2 more than
    13·1 answer
  • What is the equation of the line that passes through the point (-5,-2) and has a slope of 3/5?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!