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
Rufina [12.5K]
2 years ago
8

How do you solve y=3x²-6x-1 using completing the square?

Mathematics
1 answer:
Setler79 [48]2 years ago
3 0
(B/2)^2 is the formula you need to complete the square
B is the second term which is -6
So let’s plug it into the formula
(-6/2)^2
(-3)^2= 9
You might be interested in
For an employee training, the employee to instructor ratio is 24 to 2. If there are 26 instructors for the training, how many em
denpristay [2]

Answer:

312 employees participated in the training

Step-by-step explanation:

Given;

employee to instructor ratio is 24 to 2

there are 26 instructors for the training

let the total number of instructors be I = 26

let the total number of employees be e = ?

employee to instructor ratio is 24 to 2, e : I = 24 : 2

e : I = 24 : 2  = e : 26

\frac{24}{2} = \frac{e}{26} \\\\e = 12 *26\\\\e = 312

Therefore, the total number of employees who participated in the training is 312

8 0
2 years ago
Liam has this spinner.
Juliette [100K]
3/8

There is 8 sections of the spinner and 3 are red. No need to simplify
6 0
2 years ago
Solve 3(a + 3) – 6 = 21.
tester [92]

Answer:

a=6

Step-by-step explanation:

to find the value of a you need to simplify the equation first. so...

3(a+3)-6=21 (you remove the bracket first)

3a+9-6=21

3a+3=21 (you collect the like terms then)

3a=21-3

3a=18 (then you both divide both sides by 3 to find the value of a)

a=18/3

a=6

to check your answer substitute 3 instead of a

3(a+3)-6=21

3(6+3)-6=21

3(9)-6=21 (according to BODMAS since multiplication comes first you multiply 3 with 9 before subtracting it from 6.)

29-6=21

21=21

6 0
3 years ago
Read 2 more answers
Factor the quadratic expression t^2 + 4t - 7
zepelin [54]

Answer:

Not factorable.

Step-by-step explanation:

We have a trinomial (3 terms). We factor by splitting the middle term 4t into factors of -7 (the last term) which add to 4.

-7 = 1 * -7

4t= 1t+-7t doesn't work

4t=-1t+7t doesn't work

This is not factorable.



7 0
3 years ago
Soire 4(x + 1) + 8 = 24. (I point)<br> оа<br> A 3.75<br> B -2<br> C 5<br> D 3
Olin [163]

Answer:

3

Step-by-step explanation:

4(x + 1) + 8 = 24

Subtract 8 from each side

4(x + 1) + 8-8 = 24-8

4(x + 1) = 16

Divide by 4

4(x+1)/4 = 16/4

x+1 = 4

Subtract 1

x+1-1 = 4-1

x=3

7 0
3 years ago
Other questions:
  • Manuel found a wrecked Trans-Am that he could fix. He bought the car for 65% of the original price of $7200. What did he pay for
    8·1 answer
  • A restaurant automatically charges a 20% gratuity if a party has 6 or more people. How much gratuity is added to a party of 6 on
    14·1 answer
  • In our solar system, 6 of the 8 planets have moons. What percentenge of the planets have moons
    15·2 answers
  • Friends please help I don’t understand this!.
    15·2 answers
  • Find the standard deviation of the following data. Answers are rounded to the nearest tenth. 5, 5, 6, 12, 13, 26, 37, 49, 51, 56
    14·1 answer
  • Been trying to get this one answered for months, will make the first one to answer a brainliest :D Please explain how you did it
    7·1 answer
  • For triangle EFG shown below, what is the measure of the exterior angle at vertex G?
    11·1 answer
  • What is the solution to this equation? -6x + 3 = 21 A. X= 4 B. X = -8 C. X = 3 D. X= -4​
    14·1 answer
  • Mai and priya scooters. Mai travel 50 m in six seconds. Priya travel 22 m in 10 seconds who is moving faster
    7·1 answer
  • joy added 26 new contacts to her phone list. She now has a total of 100 contacts. Let c represent how many contacts joy had on h
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!