Alicia watched a drone take off from a bridge. The height of the drone (in meters above the ground) t minutesafter takeoff is modeled by
h(t) = -3t2 + 12t +96
Alicia wants to know when the drone will land on the ground.
1) Rewrite the function in a different form (factored or vertex) where the answer appears as a number in the
equation
h(t) =
2) How many minutes after takeoff does the drone land on the ground?
minutes

Answers

Answer 1
Answer:

The function can be written as: h(t) = - 3(t² - 4t - 32). As per quadratic equation, after take off, the drone will land on the ground after 8 minutes.

What is a quadratic equation?

A quadratic equation is an equation that contains a variable with highest degree of 2.

Given, the height of the drone t minutes after take off is modeled by

h(t) = - 3t² + 12t + 96 = - 3(t² - 4t - 32)

Therefore, the function can be written as: h(t) = - 3(t² - 4t - 32)

Therefore, we can write the equation as:

t² - 4t - 32 = 0

⇒ t²- 8t + 4t - 32 = 0

⇒ t(t - 8) + 4(t - 8) = 0

⇒ (t + 4)(t - 8) = 0

Hence, (t + 4) = 0 and (t - 8) = 0

Therefore, t = -4, 8.

As 't' can't be negative, therefore, t = 8.

Therefore, after take off, the drone will land on the ground after 8 minutes.

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Answer 2
Answer:

Answer:

h(t) = -3(t-8)(t+4). and 8 minutes

Step-by-step explanation:


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Write the equation of a parabola, in standard form, that goes through these points: (0, 3) (1, 4) (-1, -6)

Answers

Hello,

P:y=ax²+bx+c is the equation.

(0,3)∈P==>3=a*0+b*0+c==>c=3
(1,4)∈P==>4=a+b+3==>a+b=1 (1)
(-1,-6)∈P==>-6=a-b+3==>a-b=-3 (2)

(1)+(2)==>2a=-2==>a=-1
(1)==>b=1-(-1)==>b=2

y=x²+2x+3 
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Write an expression to represent: The sum of one and the product of one and a number x

Answers

1X+1 is the answer. Hope this helped

A group of 5 friends shares 35 pieces of candy equally. How many pieces of candy does each friend receive? I need help !!!

Answers

Each friend will receive 7 pieces of candy after dividing it equally.

What is division?

" Division is the method of distributing or sharing any group of items equally."

According to the question,

Total pieces of candy = 35

Total number of friends= 5

Division of candy between 5 friends

Number of candy each friend will received = 35 ÷ 5

                                                                        = 7pieces

Hence, Each friend will receive 7 pieces of candy.

Learn more about division here

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Answer:

7 pieces of candy each friends have

Step-by-step explanation:

35 ÷ 5 = 7

5 × 7 = 35

so the answer is 7

What are the coordinates of point P on the directed line segment from A to B such that P is One-fourth the length of the line segment from A to B?

Answers

Given:

The coordinates of the point A and B are (-5,-1) and (4,1)

The point P on the directed line segment from A to B such that P is One-fourth the length of the line segment from A to B.

Thus, we have;

m=1 and m+n=4

We need to determine the coordinates of the point P(x,y)

x - coordinates of the point P:

The x - coordinates of the point P can be determined using the formula,

x=\left((m)/(m+n)\right)\left(x_(2)-x_(1)\right)+x_(1)

Substituting the values, we get;

x=\left((1)/(4)\right)\left(4+5\right)-5

x=(9)/(4)-5

x=-(11)/(4)

Thus, the x - coordinate of the point P is -(11)/(4)

y - coordinate of the point P:

The y - coordinate of the point P can be determined using the formula,

y=\left((m)/(m+n)\right)\left(y_(2)-y_(1)\right)+y_(1)

Substituting the values, we get;

y=\left((1)/(4)\right)\left(1+1\right)-1

y=(2)/(4)-1

y=(-2)/(4)

y=-(1)/(2)

Thus, the y - coordinate of the point P is -(1)/(2)

Therefore, the coordinates of the point P is \left((-11)/(4), (-1)/(2)\right)

Hence, Option C is the correct answer.

Answer:

The answer is C

Step-by-step explanation:

The cost of a jacket increased from $75.00 to $87.75. What is the percentage increase of the cost of the jacket?

Answers

1) we have to calculate the increase of the cost of the jacket.
Increase of the cost of the jacket=new price - previous price
increase of the cost of the jacket=$87.75 - $75.00=$12.75

2)Now, we calculate the percentaje incresae of the costo of the jacket by the rule of three.
$75=100%

$75------------------100%
$12.75-------------      x

x=($12.75 * 100%) / $75=17%

Answer: the percentage increase of the cost of the jacket is 17%

You drop a ball from a height of 0.5 meter. Each curved path has 52% of the height of the previous path.a. Write a rule for the sequence using centimeters. The initial height is given by the term n = 1.
b. What height will the ball be at the top of the third path?

Answers

Answer:

  1. f(n)=0.5(0.52)^(n-1)
  2. 0.14 m

Step-by-step explanation:

The initial height of the ball is 0.5 m

Each curved path has 52% of the height of the previous path, i.e the height of the ball after one bounce will be,

=(52)/(100)* 0.5\n\n=0.52* 0.5\ m

The height of the ball after 2 bounces will be,

=(52)/(100)*(0.52* 0.5)

=0.52*0.52* 0.5

=0.52^2* 0.5\ m

Hence the series becomes,

0.5,0.5(0.52),0.5(0.52)^2,............

This is the case of Geometric Progression.

But as it is given that the initial height will be given by n=1, so the rules for finding the height f(n) after n bounces would be,

f(n)=0.5(0.52)^(n-1)

Putting n=3, we can get the height of the ball of the third path,

\Rightarrow f(3)=0.5(0.52)^(3-1)=0.5(0.52)^(2)=0.14\ m

This is a geometric sequence.  The first term is the max height of the first curved path, which is 0.5.  The second one is 52% of that meaning that it is 0.52 times the first term.  The third term is 0.52 times the second term. Thus, in this geometric sequence,

a = 0.5
r = 0.52

You will need to use the relation a_n = a \cdot r^(n-1)