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
wariber [46]
3 years ago
10

Solve 3x2 + 18x + 15 = 0 by completing the square.

Mathematics
1 answer:
kondaur [170]3 years ago
3 0
<span>3x^2 + 18x + 15 = 0
15 + 18x + 3x2 = 0
3(5 + 6x + x2) = 0
</span>3((5 + x)(1 + x)) = 0
5 + x = 0
5 + -5 + x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + x = 0 + -5 x = 0 + -5
x = -5
<span>--------------------------------------------
1 + x = 0 x=-1
-5,-1 </span>
You might be interested in
Prove: The midsegment between sides Line segment AB and Line segment BC is parallel to side Line segment AC.
Allushta [10]
CD in the middle
have a nice day sir/maam
3 0
3 years ago
Twenty-seven trillion fifty-seven million three hundred twenty-four thousand
lawyer [7]
27,057,324,083 i am pretty sure
5 0
3 years ago
HELP 50 POINTS
Aleksandr-060686 [28]

Answer: #2

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Help... pls ASAP Fill in the blanks
Elis [28]

Answer:

I got this! Basically, the instructions say 12 gallons per 3 minutes. So you plug in the 12/3 to find the ratio of how many gallons per 1 minute.

Step-by-step explanation:

So, for the chart you just mulitply and evauluate

Time (min)           | 2 |  3 |  4 |   5  |   6 |

Water used (gal) | 8 | 12 | 16 | 20 | 24 |

8 0
3 years ago
F(7)=2x-3 ?<br><br> please ?
Nesterboy [21]

Answer:13

Step-by-step explanation:

2(7)-3

6 0
3 years ago
Other questions:
  • How do you solve (8^1)^0
    9·1 answer
  • What is the equation in point slope form of the line that passes through the point 
    11·1 answer
  • I did it but it didn't have my answer on the list lol
    5·1 answer
  • Jell was playing among us for 3 hours straight,the next day she played for 1 hour,in total she played for 4 hours,and each time
    15·1 answer
  • What is the square root of 45600 in fraction​
    11·1 answer
  • Kim decides to give her old toys to her younger cousins. She gives her cousin Sarah 2/3. Then, she gives her cousin Ryan 2/5 of
    7·1 answer
  • Marinas bill for dinner totals $38.65, including tax. She leaves a 20% tip. How much is Marinas total? (pls hurry i’m in summer
    10·1 answer
  • Slope 0; through (-5, -1)<br> with steps please.
    12·1 answer
  • 10x10= what<br> please answer i want to see if it works
    7·2 answers
  • Find the value<br> 25 points for you, a thanks, 5 star rating and brainliest to the right answer
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!