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
Vinvika [58]
3 years ago
11

How can you use the quadratic formula to complete a square?

Mathematics
2 answers:
Marina86 [1]3 years ago
6 0
It has become somewhat fashionable to have students derive the Quadratic Formula themselves; this is done by completing the square for the generic quadratic equation ax2 + bx + c = 0. While I can understand the impulse (showing students how the Formula was invented, and thereby providing a concrete example of the usefulness of abstract symbolic manipulation), the computations involved are often a bit beyond the average student at this point.
notka56 [123]3 years ago
5 0
<span><span>Step 1 Divide all terms by a (the coefficient of x2).</span>Step 2 Move the number term (c/a) to the right side of the equation.<span>Step 3 Complete the square on the left side of the equation and balance this by adding the same value to the right side of the equation.</span></span>
You might be interested in
Can somebody please explain number 15 and number 18 to me, I'm begging you I cannot do this to save my life I've been trying to
balu736 [363]
Hey there! I’m happy to help!

NUMBER 15
To solve this problem we want to round to the nearest millionth. We cannot actually write out the entire number because it goes on forever, but we can expand long enough so we can round it the millions place.

One million has six zeroes. This means that a millionth is six decimal places over (0.000001 is one millionth). Same goes for other base ten numbers (100 has two zeroes, one hundredth is two decimal places over)

We see that there is a line over the 45 in our decimal. This means that after this 45 it is going to go 4545454545.... forever. We want to round to the nearest millionth. However, when you round, you need the next digit over. Let’s expand our to the ten millionth (seven digits.)
6.2145454............
Now, we look at our millionths place. The next place over is four. Therefore, we round down. Therefore, the answer is D) 6.214545

QUESTION 18
Solving questions like this is very simple. With proportions (two equal ratios of fractions) the product of the diagonal sides are equal. So, you just multiply the two numbers that are diagonal from each other and then divide it by the other number and you have your x. If you want, I can explain to you more why this works.

7(2/7)=2
2/2 1/4= 8/9

Therefore, the answer is 8/9.

I hope this has been helpful! If you need anymore help please ask! :D
6 0
3 years ago
A man earns $11.62 for each of the first 36 hours he works in one week and $17.43 in overtime pay for each additional hour he wo
11Alexandr11 [23.1K]

Answer:

21❄️....................

8 0
2 years ago
Solve the math problem
Colt1911 [192]

Answer:I think its ether y-interspersed or equation

Step-by-step explanation:

6 0
2 years ago
Help and I’ll kiss u again mwah mwah
ElenaW [278]

Answer:

It was reflected down and to the right I think.

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Calculate percentage to the nearest 0.1%.
Anna71 [15]

9514 1404 393

Answer:

  a. $4.17

  b. 233.3%

Step-by-step explanation:

a. The proportion the markup (m) is to the total (t) is ...

  m : t = 7 : 10

The total is the cost (c) plus the markup, so we have ...

  m : t = 7 : 10 = m : (m +c) = 7 : 7 +3

Then the ratio of total price to cost is ...

  t : c = 10 : 3

The menu price of the pie slice will be ...

  $1.25 × 7/3 ≈ $4.17

__

b. The ratio of markup to cost is ...

  m : c = 7 : 3 ≈ 2.333 = 233.3%

4 0
3 years ago
Other questions:
  • I need The answers for number 29-31 please reply To My question I need all of This done please
    13·1 answer
  • 1/3(5x-15+4x)=1+3×+4
    9·2 answers
  • I don't know why its correct. Help explain to me pls.
    10·1 answer
  • If we inspect photocopy paper by randomly drawing 5 sheets without replacement from every pack of 500, what is the probability o
    12·1 answer
  • How to solve -x+4=-2x-6
    11·2 answers
  • The ratio of boys to girls at a summer camp 3:5. If there are 27 boys,how many girls are there ?
    8·2 answers
  • It takes Walter n minutes to get to his friend's house. If he travels to his friend's house 8 days in a row, taking a total of 1
    6·1 answer
  • In ΔXYZ, x = 460 inches, y = 340 inches and ∠Z=47°. Find the area of ΔXYZ, to the nearest square inch.
    11·2 answers
  • Please help, answer must be in fraction form if possible
    11·1 answer
  • molly is 4 years younger than Heidi. In 3 years, Heidi will be twice as old as Molly. How old are they now
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!