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
oksano4ka [1.4K]
3 years ago
14

Identify the vertex and axis of symmetry of 8x

tle="y=-x^{2} +8x-12" alt="y=-x^{2} +8x-12" align="absmiddle" class="latex-formula">
Mathematics
1 answer:
Bad White [126]3 years ago
6 0

y=-x^2+8x-12\\y=-(x^2-8x)-12\\y=-[(x^2-8x+16)-16]-12\\y=-[(x-4)^2-16]-12\\y=-(x-4)^2+16-12\\y=-(x-4)^2+4

Factor the minus or negative off the -x²+8x and don't do anything with -12

Find the number that can complete the square, for x²-8x, it'd be +16.

Just think of debt, you borrow, you have to give back. You borrow +16 then you have to give 16 out so you write -16 out of x²-8x+16 but still inside the bracket.

Distribute the minus/negative inside the bracket as you get -(x-4)²+16-12 because negative multiply negative and you get positive

Then you get y=-(x-4)^2+4

Because a<0, it's inverted parabola as shown below.

therefore, the vertex is at (4,4) or (-(-4), 4) because the vertex is at (-h,k) and h is -4 that means -h = 4

axis of symmetry is -b/2a, our b is 8, -b = -8 and 2a = 2(-1) so -8/-2 = 4 (From the standard form)

therefore, axis of symmetry is 4

You might be interested in
Whats up wate is 3000+39645
kozerog [31]

Answer:

MARK ME BRAINLIEST BRO!!!!!!!!

Step-by-step explanation:

5 0
2 years ago
Help Me 20 points Need Correct ASAP
trasher [3.6K]

Answer:

I also need help on this PLZ help

7 0
3 years ago
Cole got 100 for his birthday. He can either save the money or buy a tennis racket with it. What is the opportunity cost if he b
hodyreva [135]
Cole can learn how to play tennis. But if he saved the money, he can save up and get something bigger, or save up for college. There is only so much he can do with a tennis racket except for using it to learn a new sport.
8 0
3 years ago
the average of two numbers is 34 the first number is three times the second number what are the two numbers
tino4ka555 [31]
Hi there!

To solve this problem, we need to set up two equations and use the system of equations to solve.

Let x be the first number.
Let y be the second number.

(x + y) ÷ 2 = 34
x = 3y

Now, we can use substitution to solve.

(3y + y) ÷ 2 = 34
4y ÷ 2 = 34
2y = 34
y = 17

Now, we plug the value of y in the equation to solve for x.

x = 3*17
x = 51

Hope this helps!
7 0
3 years ago
Express 3/4 in sixty-fourths
mestny [16]
64/4 is 16
3 times 16 is 48
the answer is 48/64
6 0
3 years ago
Read 2 more answers
Other questions:
  • How do you write 281% as a decimal
    6·2 answers
  • Four students had the following amounts of money in their pockets: $3.14, $.67, $2.45, and $1.14. How much money did they have t
    9·2 answers
  • Tim plays a computer game each game is a win or a loss he wins three fifths of his first 40 games he then wins his next 12 games
    9·1 answer
  • HELP PLS!! according to the rational root theorem, -2/5 is a potential rational root of which function?
    13·1 answer
  • Henry says he can write an 8 in each box to make both equations true. Is he correct?
    14·1 answer
  • PLEASE HELLLLLP ME!!!!!!<br> Write the inequality for five times b plus 3 is at most 10
    9·2 answers
  • Distance between (-12, 2) (-9, 6)<br><br> please helpppp
    5·2 answers
  • Write the number 0.000 000 7 in standard form.
    8·1 answer
  • Find the distance between (−4, −3) and (−2, 0). Round your answer to the nearest tenth.
    15·1 answer
  • What value of k transforms the graph of f(x)=0.5x+3 into graph g? Describe the transformation.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!