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
lukranit [14]
3 years ago
12

Carl is deriving the quadratic equation by completing the square. His work at one of the steps is shown. x + b/na = + or - b^2-4

ac. Carl is not sure what the value of n is. What value should he use to continue deriving the quadratic equation correctly? A. 1 B. 2 C. 3 D. 4
Mathematics
1 answer:
krok68 [10]3 years ago
8 0

Answer:

the correct option is B. 2

Step-by-step explanation:

As given,

x + \frac{b}{na} = ± √b²-4ac

⇒x = -\frac{b}{na} ± √b²-4ac

As e know that the quadratic formula is

x = \frac{-b + or - \sqrt{b^{2} - 4ac }  }{2a}

So , by comparing with the formula

we get

n = 2

So, the correct option is B. 2

You might be interested in
1) 17, 29, 32, 9, 30, 14, 8, 39, 11, 32, 23<br> Minimum :<br> Maximum:<br> Q1:<br> Q2:<br> Q3:
Lisa [10]

Answer:

Minimum: 8

Maximum: 39

Q1: 11

Q2: 23

Q3: 32

Step-by-step explanation:

Set the numbers into numerical order

8 9 11 14 17 23 29 30 32 32 39

Then separate into quarters

[8 9 11] [14 17 23] [29 30 32] 32 39

6 0
2 years ago
A flying saucer crashes in a Nebraska cornfield. The FBI investigates the wreckage and finds an engineering manual containing an
anyanavicka [17]

Answer:

6 fingers

Step-by-step explanation:

Let X = the base of the numbers above

If X > 0

Then we have:

325 = 3 * X² + 2 * X¹ + 5 * X°

325 = 3X² + 2X + 5

42 = 4*X¹ + 2*X°

42 = 4X+ 2

And

411 = 4*X²+ 1*X¹ 1*X°

42 = 4X² + X + 1

Since 325 + 42= 11 then

3X² + 2X + 5 + 4X+ 2 = 4X² + X + 1 ------ Collect Like Terms

3X² - 4X² + 2X + 4X - X + 5 + 2 - 1 = 0

-X² + 5X + 6 = 0 ------- Multiply both sides by -1

X² - 5X - 6 = 0 ------- Factorise the Equation

X² - 6X + X - 6 = 0

X(X - 6) + 1( X - 6) = 0

(X + 1)(X - 6) = 0

X + 1 = 0 or X - 6 = 0

X = -1 or X = 6

But X>0

So, X =-1 is invalid

X = 6

The expected number of fingers of the Martian is 6

6 0
3 years ago
What is the period of the function F(x) = -4sec (1/2 x)
serg [7]

Answer:

A) 4π

Step-by-step explanation:

The period of a secant function, f(x)=a*sec(bx+c)+d, is defined as 2π/|b| where b is the distance of the period. Since we know b=1/2 given by the function, then the period is 2π/|1/2|=2π/(1/2)=2π(2/1)=4π.

8 0
2 years ago
Please help me please!!!​
AURORKA [14]

Make one side length of the cube s.

V = lwh, but the length, width, and height are all s.

So V = sss, or s^3.

If it has a side length of 2^4, then 2^4 = 16.

V = s^3, or V = 16 times 16 times 16, which = 4096.

8 0
3 years ago
{Pic attached} I AM MARKING BRAINLIEST ASAP TO THE PERSON WHO ANSWERS WITH AN EXPLANATION! PLEASE HELP.
never [62]

Answer: 5 6/10

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Other questions:
  • for the past 3 months, grace used her cell phone for 43 min, 62 min, and 57 min.how many minutes would she have to use her cel p
    12·1 answer
  • Can Someone Please Help me, Show Work too
    14·1 answer
  • 3. Name the angles from largest to smallest
    10·1 answer
  • Probability distribution part 2<br>​
    12·1 answer
  • I wanna had 93%, 85% and 75%, but I have no idea how to do it.
    6·1 answer
  • Country A produces about four times the amount of diamonds in carats produced in country B. If the total produced in both countr
    6·1 answer
  • Need help FAST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    14·1 answer
  • The diagram represents an 11 cm by 6 cm rectangle.
    5·1 answer
  • Is it (sss) (side side side ) Hypotenuse-Leg (HL), ssa?(sas) aaa,asa,aas?
    10·1 answer
  • 5. At a classroom costume party,
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!