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
Softa [21]
3 years ago
7

What are the solutions for x when y is equal to 0 in the quadratic function y=x^2-8x

Mathematics
1 answer:
Elena L [17]3 years ago
5 0
I would use the quadratic formula for this:

  x = -b ± √b² - 4ac over 2a
  x = 8 ± √64 - 4(1)(0) over 2(1)
  x = 8 ± √64 over 2
  x = 8 <span>± 8 over 2 [simplify]
  x = 4 </span><span>± 4
     x1 = 4 + 4    x2 = 4 - 4
     x1 = 8          x2 = 0


Thus, the solutions for x would be 0 and 8.</span>
You might be interested in
Please can someone help me on these? solve this equation by factorising: 2x^2 + 5x + 2 = 0
slavikrds [6]
2x^2 + 5x + 2 = 0\\&#10;2x^2+4x+x+2=0\\&#10;2x(x+2)+1(x+2)=0\\&#10;(2x+1)(x+2)=0\\&#10;x=-\frac{1}{2} \vee x=-2

x^2-4x+1=0\\&#10;x^2-4x+4-3=0\\&#10;(x-2)^2=3\\&#10;x-2 =\sqrt3 \vee x-2=-\sqrt3\\&#10;x=2+\sqrt3 \vee x=2-\sqrt3
7 0
3 years ago
Here said the sum of several decimal numbers is less than. 28.431 and greater than 28.404 which of the following could be here's
igor_vitrenko [27]
Your answer is C) because it is in between
8 0
3 years ago
Read 2 more answers
X = 4. 5x +23x^3 - 360.
Zinaida [17]

Missing: 360 ‎| ‎Must include: ‎360

look at

https://www.google.com/search?q=x+%3D+4.+5x+%2B23x%5E3+-+360&rlz=1CAJAIV_enUS838&oq=x+%3D+4.+5x+%2B23x%5E3+-+360&aqs=chrome..69i57&sourceid=chrome&ie=UTF-8&safe=active&ssui=on

4 0
3 years ago
Read 2 more answers
Complete the sentence.
Over [174]

Answer:


Step-by-step explanation:

The horizontal asymtote is when there are no solutions for x, so it is when y = -10.

This is because when y = -10, 0.8^x must be 0, but this is impossible. You can test this by trying 4^x/5^x. It will get super small, but never 0.

5 0
3 years ago
WILL GIVE BRAINLIST
Nataliya [291]

Answer:

Step-by-step explanation:

Find out the  how much chlorine is in the pool .

To prove

As given

The amount of chlorine in a swimming pool varies directly with the volume of water.

The pool has 2.5 milligrams of chlorine per liter of water.

i.e

2.5 milligrams of chorine = 1 litre of water

There are 8000 gallons of water in the swimming pool.

As 1 gallons = 3.78541 litre (Approx)

Now convert 8000 gallons of water in litres.

8000 gallons = 8000 × 3.78541 litre

                     = 30283.28 litres

Now calculate chlorine in the pool for 30283.28 litres  of waters.

As

2.5 milligrams of chlorine = 1 litre of water

2.5 × 30283.28 milligrams of chlorine = 30283.28 litre of water

75708.2 milligrams of chlorine for 30283.28 litre of water .

5 0
2 years ago
Read 2 more answers
Other questions:
  • Whats the perimeter of a semicircle of 6cm​
    12·1 answer
  • Factorise them please
    7·2 answers
  • 1) A survey of favorite colors showed 198 people chose
    6·1 answer
  • Can someone plzzz show me how to solve this?
    7·1 answer
  • An isosceles right triangle has a leg that measures 6 in long. About how long is the hypotenuse?
    8·1 answer
  • You are working as an apprentice for the bksb Newcastle Arena.
    10·1 answer
  • In the expression 73 – 4•3+8, the first operation is...? A.an exponent
    9·1 answer
  • The equation y=1/5x represents a proportional relationship. Explain how you can tell the relationship is proportional from the g
    7·1 answer
  • Doing a mastery check.
    9·1 answer
  • A 12-m ladder is leaning against a wall.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!