A person standing at the edge of a cliff 48 feet tall throws a ball up and just off the cliff with an initial upward velocity of 8 feet per second. What is the maximum height of the ball? When will the ball hit the ground?



The ball will be at its highest at ___


feet.



The ball will hit the ground at t =___


second(s)

Answers

Answer 1

Check the picture below.

since the cliff is 48 feet tall, thus that its initial height.

[tex]~~~~~~\textit{initial velocity in feet} \\\\ h(t) = -16t^2+v_ot+h_o \quad \begin{cases} v_o=\textit{initial velocity}&8\\ \qquad \textit{of the object}\\ h_o=\textit{initial height}&48\\ \qquad \textit{of the object}\\ h=\textit{object's height}&\\ \qquad \textit{at "t" seconds} \end{cases} \\\\\\ h(t)=-16t^2+8t+48[/tex]

well, as you can see in the picture, its maximum is at its vertex, so

[tex]\textit{vertex of a vertical parabola, using coefficients} \\\\ y=\stackrel{\stackrel{a}{\downarrow }}{-16}x^2\stackrel{\stackrel{b}{\downarrow }}{+8}x\stackrel{\stackrel{c}{\downarrow }}{+48} \qquad \qquad \left(-\cfrac{ b}{2 a}~~~~ ,~~~~ c-\cfrac{ b^2}{4 a}\right) \\\\\\ \left(-\cfrac{ 8}{2(-16)}~~~~ ,~~~~ 48-\cfrac{ (8)^2}{4(-16)}\right)\implies \left(\cfrac{1}{4}~~,~~48-\cfrac{64}{-64} \right)[/tex]

[tex]\left( \frac{1}{4}~~,~~48+1 \right)\implies \stackrel{\textit{the ball is at highest}}{\left(\frac{1}{4}~~,~~\stackrel{\downarrow }{49} \right)}[/tex]

well, it hits the ground when y = 0.

[tex]\stackrel{h(t)}{0}=-16t^2+8t+48\implies 0=8(-2t^2+t+6)\implies 2t^2-t-6=0 \\\\\\ (2t+3)(t-2)=0\implies t= \begin{cases} -\frac{3}{2}\\\\ 2~~\textit{\large \checkmark} \end{cases}[/tex]

notice, we didn't use the negative value, since "t" must be greater than 0.

A Person Standing At The Edge Of A Cliff 48 Feet Tall Throws A Ball Up And Just Off The Cliff With An

Related Questions

-2/3(x+12)+2/3x= -5/4x +2
show your work thanks! :)

Answers

Answer:

Step-by-step explanation:

Sal recorded the number of crackers in each snack-sized package he opened. a number line goes from 5 to 15. the whiskers range from 7 to 15, and the box ranges from 7 to 10. a line divides the box at 9. which statement must be true according to the box plot? the data is symmetric, and the lowest number of crackers in a package was 7. the data is symmetric, and the lowest number of crackers in a package was 8. the data is skewed, and the lowest number of crackers in a package was 7. the data is skewed, and the lowest number of crackers in a package was 8.

Answers

The statement must be true according to the box plot if the data is skewed, and the lowest number of crackers in a package was 7. Option C is correct.

What is a number line?

A number line is drawn with numbers equally spaced or sections running the length of it.

A number line should be drawn horizontally and can be extended in any direction indefinitely.

The number line shows the number of crackers lies between 7 and 13. Which is numerically as 7,8,9,10,11,12,13.The number of the digit on the number line skewed is 7.

Hence statement must be true according to the box plot if the data is skewed, and the lowest number of crackers in a package was 7. Option C is correct.

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Answer:

the answer is C

Step-by-step explanation:

Because im js swag

can someone pls help me answer this question? hurry.

Answers

Answer:

12a −24b −4

Step-by-step explanation:

What does folding paper have to do with exponents? (Currently struggling please help

Answers

Answer:

The thickness of the paper doubles each fold: it's an exponential growth.

Step-by-step explanation:

This is call a exponential growth

Here is a cube.
Area = 4x(squared)
The area of a face of the cube is 4x(squared).
Write an expression for the total surface area of the cube. Write your answer as simply as possible.

Answers

Answer:

Step-by-step explanation:

A cube has 6 faces. Area of one face is 4x². To find the total suface area of cube, multiply 4x² by 6

Area of cube = 6 * 4x²

                      = 24x²

If a1= 5 and an = 2an-1 + 5 then find the value of a4.

Answers

Answer:

a₄ = 75

Step-by-step explanation:

using the recursive formula and a₁ = 5 , then

a₂ = 2a₁ + 5 = 2(5) + 5 = 10 + 5 = 15

a₃ = 2a₂ + 5 = 2(15) + 5 = 30 + 5 = 35

a₄ = 2a₃ + 5 = 2(35) + 5 = 70 + 5 = 75

Answer:

[tex]a_4=75[/tex]

Step-by-step explanation:

Given:

[tex]a_1=5[/tex][tex]a_n=2(a_{n-1})+5[/tex]

[tex]\implies a_2=2(a_1)+5=2(5)+5=15[/tex]

[tex]\implies a_3=2(a_2)+5=2(15)+5=35[/tex]

[tex]\implies a_4=2(a_3)+5=2(35)+5=75[/tex]

The quadratic functions f(x) and g(x) are described as follows: f(x) = −4x2 5 x g(x) 0 0 1 1 2 5 3 1 4 0 which of the following statements best compares the maximum value of the two functions? the maximum value is the same for both functions. f(x) has a greater maximum value than g(x). g(x) has a greater maximum value than f(x). the maximum values cannot be determined.

Answers

Then the maximum value of both the quadratic functions is the same. Then the correct option is A.

What is a quadratic equation?

It is a polynomial that is equal to zero. Polynomial of variable power 2, 1, and 0 terms are there. Any equation having one term in which the power of the variable is a maximum of 2 then it is called a quadratic equation.

The quadratic functions f(x) and g(x) are described as follows:

f(x) = −4x² + 5

x     g(x)

0       0

1         1

2       5

3        1

4       0

The value of x for which f(x) will be maximum

[tex]\begin{aligned} \dfrac{d}{dx} \ f(x) = 0\\\\\dfrac{d}{dx} \ (-4x^2 + 5) = 0\\\\-8x =0\\\\x = 0 \end{aligned}[/tex]

Then the maximum value of f(x) will be

f(x) = −4(0)² + 5

f(x) = 5

Then the maximum value of both the functions is the same.

More about the quadratic equation link is given below.

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Answer:

The maximum values is the same for both functions.

Step-by-step explanation:

I took the test on flvs and got it right. And it should be correct too on other places like flvs. Hope this helps.

(please don't report me for advertisement of other websites. I believe how I have put it doesn't break that rule.)

James and Sarah went out to lunch. The price of lunch for both of them was $60. They tipped their server 30% of that amount. How much did each person pay if they shared the price of lunch and the tip equally?​

Answers

Answer:

The answer is that they both payed $9.00.

Step-by-step explanation:

The both payed $60.00, and 30% of that is $18.00.

( $60.00*.03=$18.00)

$18.00 divided by two (two people, James and Sarah) is $9.00.

So they both payed $9.00 individually.

What is the solution to the system of equations?
4x+y=5
x-2y=6

O(2,-2)
O (-2,2)
O (1/2,4)

Answers

Answer:

  (x, y) = (1 7/9, -2 1/9)

Step-by-step explanation:

If all you want is a solution, an appropriate calculator can provide that. The attachment shows the result of using a graphing calculator. (We have to know the fraction equivalents of the decimal values shown.)

The solution to the system is ...

  (x, y) = (1 7/9, -2 1/9)

__

The solution is approximately (2, -2).

Brahmagupta’s solution to a quadratic equation of the form ax2 bx = c involved only one solution. which solution would he have found for the equation 3x2 4x = 6?

Answers

The value of the quadratic equation is given by the formula. Then the value of x is 0.8968 and negative 2.23.

What is a factorization?

It is the method to separate the polynomial into parts and the parts will be in multiplication. And the value of the polynomial at this point will be zero.

The equation for the expression is given below.

3x² + 4x = 6

3x² + 4x - 6 = 0

we know that the formula

[tex]\rm x = \dfrac{-b\pm \sqrt{b^2-4ac}}{2a}[/tex]

Then we have

[tex]x = \dfrac{-4 \pm \sqrt{4^2-4*4*(-6)}}{2*3}\\\\x = \dfrac{-4 \pm \sqrt{112}}{6}\\\\x = 0.8968, \ -2.23[/tex]

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Answers

Answer:

the first one

Step-by-step explanation:

absolute value is a number's distance from zero, so distance from zero can not possibly be negative. Therefore, |4x-2|=-6 has no solution.

Answer:

It would be the first one because there is no value of x that makes the equation be true since an absolute value can never be negative.

Step-by-step explanation:

Hope this helps:)....if don't help then sorry for wasting your time and may God bless you:)

After trick-or-treating, Juan counted his candy. He collected 25 pieces of candy and noticed that 2/5 of the candy was chocolate. How many pieces of Juan’s candy were chocolate?

Answers

10 pieces of candy were chocolate

Given line segment AB with endpoints A(-1, 7) and B(11, -1)

Find the length of AB

Answers

The length of the segment AB is the number of units on AB, and the length of segment AB is 14.4 units

How to determine the length of segment AB?

The points are given as:

A = (-1,7)

B = (11,-1)

The length of the segment is then calculated using:

AB = √(x₁ - x₂)² + (y₁ - y₂)²

So, we have:

AB = √(-1 - 11)² + (7 + 1)²

Evaluate the exponent

AB = √144 + 64

Evaluate the sum

AB = √208

Evaluate the exponent

AB = 14.4

Hence, the length of segment AB is 14.4 units

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PLEASE HELP!!
Solve x^2=81 and x^2-18x=7.
Please show your work!

Answers

Answer:

x² = 81 , x = ± 9

x² - 18x = 7 : x = 9 ± √(22)

Step-by-step explanation:

x² = 81

simply take the square root of both sides

x = ± 9

x² - 18x = 7

This question is a bit more complicated as there is a variable with a power as well as a variable with no power. To solve for x we are going to have to put the equation in quadratic form then solve using the quadratic equation

x² - 18x = 7

put the equation in quadratic form by subtracting 7 from both sides so that the equation is equal to 0

x² - 18x - 7 = 0

we can now solve for x using the quadratic equation

recall the quadratic equation : [tex]x=\frac{-b+\sqrt{b^2-4ac} }{2a}[/tex]

where the value of a,b and c are derived from the equation

remember the equation is in quadratic form ax² + bx + c = 0

so ax² + bx + c = 0 : x² - 18x - 7 = 0

knowing this we can assign variables, a = 1 , b = -18 and c = -7

now we plug in the variables into the quadratic equation

recall equation : [tex]x=\frac{-b+\sqrt{b^2-4ac} }{2a}[/tex]

a = 1 , b = -18 and c = -7

plug in values

[tex]x=\frac{-(-18)+\sqrt{(-18)^2-4(1)(-7)} }{2(1)}[/tex]

remove parenthesis

[tex]x=\frac{18+\sqrt{(-18)^2-4(1)(-7)} }{2(1)}[/tex]

simplify exponent

[tex]x=\frac{18+\sqrt{324-4(1)(-7)} }{2(1)}[/tex]

simplify multiplication in square root and on denominator

[tex]x=\frac{18+\sqrt{324+28} }{2}[/tex]

simplify addition

[tex]x=\frac{18+\sqrt{352} }{2}[/tex]

simplify radical

[tex]x=\frac{18+4\sqrt{22} }{2}[/tex]

simplify fraction

[tex]x=9+or-\sqrt{22}[/tex]

and we are done!

f(x) = -2(3)^ x-2
Complete the following statements about f(x).
The y-intercept of f(x) is
The x-intercept of f(x) is_
The end behavior of f(x) is -
f(3) =
f(4) =

Answers

hi my name not Jeff. ok?

Step-by-step explanation:

hi im not jeff

Which integer has the greatest value (-17,-7,-3,-23)

Answers

Answer:

that would be -3 becuase it's the least negative out of all the choices

Step-by-step explanation:

will make brainliest help please.

Answers

Answer:

D) As the amount of nutrients in the soil increases, the rate of plant growth increases.

Step-by-step explanation:

When there is more nutrients in the soil it makes the plant healthier and grow more. Also all of the other ones have no correlation to eachother or effect on another.

find the slope of the line through the given points 4,2 and 6,4

Answers

Answer:

2/2 = 1

Step-by-step explanation:

Slope intercept equation:

y2 - y1 / x2 - x1 = slope

the graphs of the functions f(x)=|x-3| + 1 and G(x)=2x + 1 are drawn. which statement about these functions is true?
A: The solution to f(x)=g(x) is 3
B: The solution to f(x)=g(x) is 1
C: The graphs intersect when Y=1
D: The graphs intersect when X=3

Answers

The only true statement that compares the two functions is:

B: The solution to f(x)=g(x) is 1

Which statements are correct?

Here we have the functions:

f(x) = |x - 3| + 1

g(x) = 2x + 1

First, let's find the solution for:

f(x) = g(x)

|x - 3| + 1 = 2x + 1

|x - 3| = 2x

Notice that we have two options, x = 3:

|3 - 3| = 2*3

0 = 6  (x = 3 is not a solution)

And x = 1:

|1 - 3| = 2*1

2 = 2  (x = 1 is a solution).

Now to get the y-value where the graphs intersect, we just evaluate one of the functions in the solution we found above;

f(1) = |1 - 3| + 1  = 2 + 1 = 3

The graphs intersect when y = 3.

Then we conclude that the only true statement is:

B: The solution to f(x)=g(x) is 1

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Instructions: Use the image and your knowledge of the
isosceles triangle to find the value of x.

Answers

Answer:

Step-by-step explanation:

In Isosceles triangle base angles (angles oppoiste to equal sides) are congruent.

x + x + 98 = 180 {Angle sum proeprty of triangle}

   2x + 98 = 180   {Subtract 98 from both sides}

        2x = 180 - 98

       2x  = 82      {Divide both sides by 2}

        x   = 82/2

x = 41

Answer:

x = 41°

Step-by-step explanation:

An isosceles triangle has 2 opposite sides equal.

Therefore the angle opposite x is also x

Hence:

x + x + 98° = 180° (angles in a triangle add up to 180°)

2x + 98° = 180°

2x = 180° - 98°

2x = 82°

2x/2 = 82°/2

x = 41°

pls help the question is here (12points) DUE TO DAY

Answers

Answer:

[tex]\bf Area= 90\;in[/tex]

Step-by-step explanation:

Area of ABCD = L * W

[tex]\bf 6\times 12[/tex]

[tex]\bf 72 \;in^2[/tex]

Area of EFGC:- L * W

[tex]\bf 6 \times 3[/tex]

[tex]\bf 18\; in^2[/tex]

Now, the area of the combind rectangles:-

ABCD + EFGC

[tex]\bf 72+18[/tex]

[tex]\boxed{\bf 90\; in}[/tex]

What is 2 log subscript 5 baseline (5 x cubed) one-third log subscript 5 baseline (x squared 6) written as a single logarithm?

Answers

The value of logarithm expression 2log₅(5x³) + (1/3)log₅(x² + 6) is simplified as log₅[{25x⁶}{∛(x² + 6)}].

What is a logarithm?

Exponents can also be written as logarithms. The other number is equal to a logarithm with a number base. It's the exact inverse of the exponent function.

The logarithmic expression is given as

[tex]2\log _55x^3 + \dfrac{1}{3} \log _5(x^2 +6)[/tex]

We know that formulas

[tex]a \log b = \log b^a\\\\\log a + \log b = \log ab[/tex]

Then we have

[tex]\rightarrow \log _5(5x^3)^2 + \log _5(x^2 +6)^{1/3}\\\\\rightarrow \log _525x^6 + \log _5\sqrt[3]{(x^2 +6)}\\\\\rightarrow \log _5 25x^6 (\sqrt[3]{(x^2 +6)})[/tex]

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Answers

Answer:

A because a prism is the only solid they can be used in that way

Solve this equation for
ab – ac = 1 for b

Answers

Answer:

a= 1/b-c

Step-by-step explanation:

Ab = 1 + ac
B = (1+ac)/a
B= 1/a + c

What is a fraction that is more than 1/10 but less than 1/2

Answers

this question makes no sense

Simplify the following completely and show your work: -5x2(2x2 - 4x - 12)

Answers

Answer:

80+40x

Step-by-step explanation:

-5x2(2x2-4x-12)

-10(2x2-4x-12)

-20-20+40x+120

-40+120+40x

80+40x

What is the x-intercept of 4x+6y= 24

Answers

Answer:

i think its between 2-5

Step-by-step explanation:

A single stem rose is $3.99. What would be the price of 36 roses?

Answers

$143.64

Tell me if this helps
Please mark me as brainliest

Find the value of x in the equilateral triangle.
Х
3 in

Answers

Answer:

x≈3.35, or the square root of 11.

Step-by-step explanation:

Use the pythagorian therom. 3²+1.5²=x²

(Half of 3 is 1.5 and the line splits it in half)

Simplify.
(7sqrt(2))(3sqrt(3))

A sqrt(14) * sqrt(9)
B. 10sqrt(5)
C. 21sqrt(6)
D. 10sqrt(6)
E. 63

Answers

Answer:

21sqrt(6)

Step-by-step explanation:

Hope it helps......

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