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
stealth61 [152]
3 years ago
10

For 7 and 8, find the maximum or minimum point of the parabola​

Mathematics
1 answer:
Leni [432]3 years ago
8 0

Answer: 7) Max: y = 52

               8) Min: y = -51  

<u>Step-by-step explanation:</u>

The Max/Min is the y-value of the intercept.

  • Max is when the a-value is negative.
  • Min is when the a-value is positive.

First, find the x-value of the vertex using the Axis of Symmetry formula:

x = -b/2a. Then plug the x-value into the equation to find the y-value.

7) y = -2x² - 16x + 20

          ↓       ↓       ↓

     a= -2   b= -16  c=20

\text{AOS:}\quad x=\dfrac{-b}{2a}\quad =\dfrac{-(-16)}{2(-2)}\quad =\dfrac{16}{-4}\quad =-4

Max: y = -2(-4)² - 16(-4) + 20

           = -2(16) + 64 + 20

           = -32 + 84

          = 52

*********************************************************************************************

7) y = x² + 12x - 15

        ↓      ↓      ↓

   a= 1   b= 12  c= -15

\text{AOS:}\quad x=\dfrac{-b}{2a}\quad =\dfrac{-(12)}{2(1)}\quad =\dfrac{-12}{2}\quad =-6

Max: y = (-6)² + 12(-6) - 15

           = 36 - 72 - 15

           = 36 - 87

          = -51

You might be interested in
How many times do you need to divide by ten to get from 5947.7 to 5.9477 ?
mixas84 [53]
Answer would be 4 times

so if u count from behind 7 to where the decimal point is it would be 4


brainliewst and thanks plz
6 0
3 years ago
Read 2 more answers
A rectangle of perimeter 100 units has the dimensions shown. Its area is given by the function A = w(50 - w). What is the GREATE
Inessa05 [86]
Using a Graph we can determine the greatest area the rectangle can have using the midpoint between the two w-intercepts.

7 0
3 years ago
.Write 803,000,000 in scientific notation.
Rina8888 [55]

Answer:

8.03*(10^8)

Step-by-step explanation:

6 0
3 years ago
Myra is playing a board game. After 12 turns, Myra has landed on a blue space 3 times.
maks197457 [2]

In 12 turns, she lands in a blue space 3 times.

12/3 =4

In 100 turns, it is expected that Myra would land on a blue space '100/4' times

100/4= 25

Which sums up to 25 turns

6 0
2 years ago
Problem 8
SpyIntel [72]
Answer:

Explanation:

1. x represent the copybook while y represent the pen that is bought.

2. 2x + 3y = 9000 means that in order to buy 2 copybooks and 3 pen you have to pay 9000 LL.

3. Solve for the price of x and y

2x + 3y = 9000 (1)
4x + 2y = 8000 (2)

Multiply (1) by -2:

-2(2x + 3y = 9000)
4x + 2y = 8000
——————————
-4x - 6y = -18000
4x + 2y = 8000
—————————
-4y = -10000
y = -10000/-4
y = 2500

Substitute y value into (2):

4x + 2(2500) = 8000
4x + 5000 = 8000
4x = 3000
x = 3000/4
x = 750

Therefore, 1 copy book = 750LL and 1 pen = 2500 LL
3 0
2 years ago
Other questions:
  • 75 - 3.5y - 4y = 4y + 6 <br> Solve for y please.
    5·2 answers
  • The point nearest to the origin on a line is at (4, -4). Find the standard form of the equation of the line.
    10·1 answer
  • A game last 7/8 hour Karen played five of those games how long did she play in tota<br>l​
    5·1 answer
  • Which statement is true about the given function
    7·2 answers
  • Which of the following expressions is equal to 58?
    14·1 answer
  • Solve the equation. 2(3x – 5) = 8
    10·1 answer
  • Caitlyn purchased a ring for her jewelry store at the wholesale price of $220 and marked up the price 35%. What is the list pric
    12·1 answer
  • A ball has a mass of 140 g. What is the force needed to accelerate the ball at 25m/s 2
    7·1 answer
  • Write the expression in complete factored form.<br> (X + 8) - 9(X + 8) =
    11·1 answer
  • Florian ran 1. 2 miles and walked 4. 8 laps around the path at the park for a total distance of 3. 6 miles. Which shows the corr
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!