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Mkey [24]
3 years ago
8

Is there anyone good at algebra 2 to solve this problem? I need help with part c.

Mathematics
1 answer:
AveGali [126]3 years ago
7 0

Answer:

40 ft

Step-by-step explanation:

The maximum height of the ball is the y- coordinate of the vertex

Given a parabola in standard form then the x- coordinate of the vertex is

x_{vertex} = - \frac{b}{2a}

h(t) = - 16t² + 48t + 4 ← is in standard form

with a = - 16, b = 48 , thus

x_{vertex} = - \frac{48}{-32} = 1.5

Substitute t = 1.5 into h(t) for max. height

h(1.5) = - 16(1.5)² + 48(1.5) + 4

         = - 36 + 72 + 4

          = 40

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Kevin operates a movie theater that sells about 800 tickets per day for $8 each. Kevin predicts that for each $0.50 increase in
dmitriy555 [2]

Answer:

The function reveals that the maximum earning from ticket sales will be $6480 after 2 ($0.50) price increases

Step-by-step explanation:

* Lets explain how to solve the problem

- The function f(x) = -20x² + 80x + 6400 represents the total

 earnings from ticket sales and x represents the number of $0.50

 price increases

∵ f(x) is a quadratic function

∵ The coefficient of x² is -20

∴ The function has a maximum value

- The vertex of the quadratic function f(x) = ax² + bx + c is (h , k),

 where h = -b/2a and k = f(h)

* Lets find the maximum point of f(x)

∵ a = -20 , b = 80

∵ h = -b/2a

∴ h = -(80)/2(-20) = -80/-40 = 2

∵ k = f(h) and h = 2

∴ f(2) = -20(2)² + 80 (2) + 6400

∴ f(2) = -80 + 160 + 6400

∴ f(2) = 6480

∴ k = 6480

* The function reveals that the maximum earning from ticket sales

  will be $6480 after 2 ($0.50) price increases

3 0
3 years ago
NEED HELP NOW 25 POINTS!!!!!!
antiseptic1488 [7]
4) 62.8 cm^2
5) It is quadrupled

7 0
3 years ago
Read 2 more answers
Plsssss help I’ll put you as a brainiest answer
Svet_ta [14]

Answer:

your answer would probably be 20 bc I times 5 then times 2 then I got 10. Then I did 10 X 2 and I got 20

6 0
3 years ago
Could someone help me
Mekhanik [1.2K]

Answer:

the third one and the last one is correct

Step-by-step explanation:

we already know the second one is wrong because of it's set up.

just replace the points (-1,7) into each equation. if it doesn't work then move on to the next one. if it does work, then use that same equation except this time to the coordinates (2,4)

5 0
3 years ago
Simplify: 3r+n²-r+5-2n+2
lutik1710 [3]
3r+n2−r+5−2n+2<span />=3r+n2+−r+5+−2n+2=3r+n2+−r+5+−2n+2<span />=(n2)+(−2n)+(3r+−r)+(5+2)<span />=n2+−2n+2r+7<span /><span />
=n2−2n+2r+7
7 0
3 years ago
Read 2 more answers
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