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
Rina8888 [55]
3 years ago
6

Solve by completing the square: x^2+15=8x

Mathematics
1 answer:
Nataly_w [17]3 years ago
3 0
<span>x^2+15=8x
</span><span>x^2-8x=-15
x^2  - 2 (x)(4) =-15
adding 16 on both sides
</span>x^2  - 2 (x)(4) +16=-15+16
x^2  - 2 (x)(4) + 4^2=  1

(x-4)^2=1

taking square root on bothsides   x-4 =  +-1
so x-4=1         or x-4=-1
x-5           or x=3

You might be interested in
What do u notice to this picture?
trasher [3.6K]

Answer:

The picture has a pattern. The pattern in this picture is that each time 4 corners are added. You can also look at this as it adds 4 each time or as the equation. Y=5+4x. Y being The amount of cubes in the equation

3 0
3 years ago
Diane sold t-shirts at a festival and made a profit of $84 . She made $6 for each t-shirt she sold. Her total expenses were $30.
sweet-ann [11.9K]

Answer:

9 t-shirts

Step-by-step explanation:

Well if she made a profit of $30 that would mean that you would subtract $84-$30 which would give you $54. Than you would divide 54/6 to find how much t-shirts she sold.

-Hope this helped (this is one of the first questions ive answered )

7 0
3 years ago
A recipe calls for 1/2 cups of milk as a decimal help
alex41 [277]

1/2 is 0.5 The answer is 0.5 because 1/2 is like a half and we know that a this fraction is less than 1. So .5+.5=1 THE ANSWER IS 0.5!

7 0
3 years ago
Read 2 more answers
Does this table represent a proportional relationship? If so, what is the constant of proportionality? Explain
klio [65]

Answer:

no it doesn't because if the number in the first column increase then the number in the second column shouldn't be decreasing also the constant between 85 and 5 was 17 but the constant between 10 and 79 wasn't the same

6 0
2 years ago
4-(-8x+5)-(-33x-26)=
Art [367]
I’ve attached my work with my answer hope it helps!

6 0
2 years ago
Other questions:
  • which of the following is the most accurate statement about statistics? A.in statistics, we use the true mean of a population to
    5·2 answers
  • The lines s and t intersect at point R.<br><br> What is the value of y?<br><br> y = ____
    5·1 answer
  • 36 and 60 in exponential form
    7·1 answer
  • Find the 81st term of the arithmetic sequence 24, 11, -2, ...24,11,−2
    12·1 answer
  • Which function has an inverse that is a function?
    11·1 answer
  • Find the value of <br><img src="https://tex.z-dn.net/?f=%20%7Bx%7D%5E%7Bi%7D%20" id="TexFormula1" title=" {x}^{i} " alt=" {x}^{i
    12·1 answer
  • What is the surface area of the figure<br><br> 16 cm *2<br> 30 cm *2<br> 48 cm *2
    7·1 answer
  • Please help me with this
    7·1 answer
  • The table shows the cost of taking a rideshare trip. Which description correctly reflects the way the charges are calculated?
    12·1 answer
  • 28 degree + x-4 degree+2x=180 degree
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!