Standing on the roof of a (42.0+A) m tall building, you throw a ball straight up with an initial speed of (14.5+B) m/s. If the ball misses the building on the way down, how long will it take from you threw the ball until it lands on the ground below? Give your answer in seconds and round the answer to three significant figures.

Answers

Answer 1

The time it would take from when you threw the ball until it lands on the ground below is equal to 2.16 seconds.

Given the following data:

Height of building =  (42.0+A) m =  (42.0+9) m = 51 m.

Initial speed of ball = (14.5+B) m/s = (14.5+8) m/s = 22.5 m/s.

Scientific data:

Acceleration due to gravity = 9.8 m/s²

How to determine the time?

Generally speaking, when this ball is thrown straight up at a certain speed, it begins to slow down as a result of the effect of downward gravitational acceleration. Consequently, the ball reaches a maximum height where it can't go higher anymore and then starts to fall down due to gravity.

In order to determine the time it would take from when you threw the ball until it lands on the ground below, we would apply the second equation of motion:

S = ut + ½gt²

½gt² + ut - S = 0

Substituting the given parameters into the formula, we have;

0.5(9.8)t + 22.5t - 51 = 0.

4.9t + 22.5t - 51 = 0.

Next, we would solve the quadratic equation by using the quadratic formula:

[tex]t = \frac{-b\; \pm \;\sqrt{b^2 - 4ac}}{2a}\\\\t = \frac{-22.5\; \pm \;\sqrt{22.5^2 - 4(0.5)(-51)}}{2 \times 0.5}\\\\t = \frac{-22.5\; \pm \;\sqrt{506.25 + 102}}{2}\\\\t = \frac{-22.5\; \pm \;\sqrt{608.25}}{2}[/tex]

t = 2.16 or -47.16

Since the time cannot be negative, the value of t to three significant figures is equal to 2.16 seconds.

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Complete Question:

Standing on the roof of a (42.0+A) m tall building, you throw a ball straight up with an initial speed of (14.5+B) m/s. If the ball misses the building on the way down, how long will it take from when you threw the ball until it lands on the ground below? Give your answer in seconds and round the answer to three significant figures.

A=9, B=8


Related Questions

Solve the linear inequality and express the solution in set-builder notation.
4(3-2x) + 3x < 6(4 + 2x)
...
The solution in set-builder notation is {x|
(Simplify your answer. Use integers or fractions for any numbers in the expression.)

Answers

Answer:

Step-by-step explanation:

NJNOLMKNJOLMKJOKJKJKPPKLKPOO

Answers

Answer:

NJNOLMKNJOLMKJOKJKJKPPKLKPOONJNOLMKNJOLMKJOKJKJKPPKLKPOONJNOLMKNJOLMKJOKJKJKPPKLKPOONJNOLMKNJOLMKJOKJKJKPPKLKPOONJNOLMKNJOLMKJOKJKJKPPKLKPOONJNOLMKNJOLMKJOKJKJKPPKLKPOONJNOLMKNJOLMKJOKJKJKPPKLKPOONJNOLMKNJOLMKJOKJKJKPPKLKPOONJNOLMKNJOLMKJOKJKJKPPKLKPOONJNOLMKNJOLMKJOKJKJKPPKLKPOONJNOLMKNJOLMKJOKJKJKPPKLKPOONJNOLMKNJOLMKJOKJKJKPPKLKPOONJNOLMKNJOLMKJOKJKJKPPKLKPOONJNOLMKNJOLMKJOKJKJKPPKLKPOONJNOLMKNJOLMKJOKJKJKPPKLKPOONJNOLMKNJOLMKJOKJKJKPPKLKPOONJNOLMKNJOLMKJOKJKJKPPKLKPOONJNOLMKNJOLMKJOKJKJKPPKLKPOONJNOLMKNJOLMKJOKJKJKPPKLKPOONJNOLMKNJOLMKJOKJKJKPPKLKPOONJNOLMKNJOLMKJOKJKJKPPKLKPOONJNOLMKNJOLMKJOKJKJKPPKLKPOONJNOLMKNJOLMKJOKJKJKPPKLKPOO

Explain a method to find the area of triangle QRS given that RT is perpendicular QS. Then find the area. Show your work.

Answers

Applying the distance formula to find the base and height of the triangle, the area of the triangle is calculated as: 17.85 units².

How to Find the Area of a Triangle?

Area of triangle = 1/2(base)(height).

The base of triangle QRS is QS.

The height of triangle QRS is RT.

Use the distance formula [tex]\sqrt{(y_2 - y_1)^2 + (x_2 - x_1)^2}[/tex] to find the length of QS and RT:

Q(2, 4) = (x1, y1)

S(8, -2) = (x2, y2)

QS = √[(8−2)² + (−2−4)²]

QS = √72

QS ≈ 8.5 units

R(6, 6) = (x1, y1)

T(3, 3) = (x2, y2)

RT = √[(3−6)² + (3−6)²]

RT = √18

RT ≈ 4.2 units

Area of triangle QRS = 1/2(8.5)(4.2)

Area of triangle QRS = 1/2(35.7)

The area of triangle QRS = 17.85 units²

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Please help me out here!!

Answers

The equation, in point-slope form, that represents the distance of Byron from home is: A. y - 4 = -6(x - 1/2).

How to Write an Equation in Point-slope Form?

An equation can be written in point-slope form, where m represents the slope and (a, b) represents a point on the line, as: y - b = m(x - a).

From the given information describing Bray's distance from home after some time, we have the following parameters:

x = hours (time)y = distance (miles)Slope (m) = -6A point = (1/2, 4)

Substitute m = -6 and (a, b) = (1/2, 4) into y - b = m(x - a):

y - 4 = -6(x - 1/2)

Therefore, the equation, in point-slope form, that represents the distance of Byron from home is: A. y - 4 = -6(x - 1/2).

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Select the best answer to the question.
ہے
Percent Sold
40%
30%
20%
10%
0%
O Line Graph
O Pie Chart
Trucks
What type of graph is this example?
O Bar Graph
O Table
Vehicle Sales
Cars
SUVS
Vehicle Types
Motorcycles

Answers

Answer:

all the correct answers are the correct answers of

Step-by-step explanation:

step by step explanation no needed because answer already answered okay there answer needed.

QUESTION : -137 +854-84+ 506 =​

Answers

Answer: 1139

Step-by-step explanation:

-137+854=717

717-84=633

633+506=1139

Sales Application Statins are used to keep cholesterol in check and are a top-selling drug in the U.S. The equation: S = 1.7 x + 5.2 estimates the amount of sales, S , of statin (in billions of dollars) x years after January 1, 1998. Sales of statin on January 1, 2008 was billion dollars. Statin sales reached 25.6 billion dollars in the year .

Answers

Sales of Statin on January 1, 2008 was 22.2 billion dollars; and the year that the Statin sales reached 25.6 billion dollars was in 2010.

How do we calculate sales and the year it occurred?

Given:

S = 1.7 x + 5.2 .............................. (1)

Sales of statin on January 1, 2008 can be calculated as follows:

x = 2008 - 1998 = 10

Substituting x = 10 into equation (1), we have:

S = (1.7 * 10) + 5.2

S = 17 + 5.2

S = 22.2

The answer above implies that sales of Statin on January 1, 2008 was 22.2 billion dollars.

The year that the Statin sales reached 25.6 billion dollars can be calculated as follows:

S = 25.6

Substituting S = 25.6 into equation (1) and solving for x, we have:

25.6 = 1.7x + 5.2

25.6 - 5.2 = 1.7x

20.4  = 1.7x

x = 20.4 / 1.7

x = 12

Therefore, we have:

The year Statin sales reached 25.6 billion = 1998 + x = 1998 + 12 = 2010

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The sales of Statin on January 1, 2008 is 22.2 billion dollars and the year statin sales reached 25.6 billion was in 2010

Linear functions

Linear functions are equations that has a leading degree of 1.

Given the expression that represents amount of sales, S , of statin (in billions of dollars) x years after January 1, 1998 as;

S = 1.7 x + 5.2

For the sales of statin on January 1, 2008, this is calculated as

x = 2008 - 1998 = 10years

Substitute x = 10 into the given equation to have;

S = 1.7(10) + 5.2

S = 17 + 5.2

S = 22.2

Therefore the sales of Statin on January 1, 2008 is 22.2 billion dollars.

For the year that the Statin sales reached 25.6 billion dollar;

S(x) = 25.6

Substituting S = 25.6 into the equation

25.6 = 1.7x + 5.2

1.7x = 25.6 - 5.2

1.7x = 20.4

x = 12

Hence the year statin sales reached 25.6 billion was in 2010

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If QS bisects PQR, m PQS = (10x-9), and m SQR= (4x+15), find x.​

Answers

Given that QS bisects PQR making mPQS the same as the mSQR, the numerical value of x is 4

What is the numerical value of x?

A bisector divides a segment or angle into two equal halves.

Given the data in the question;

QS bisects PQRm PQS = (10x-9)m SQR= (4x+15)Value of x = ?

Since QS bisects PQR, m PQS is the same as m SQR.

Hence;

m SQR =  m PQS

We plug in the values

(4x+15) = (10x-9)

Remove parenthesis and solve for x.

4x + 15 = 10x - 9

15 + 9 = 10x - 4x

24 = 6x

x = 24/6

x = 4

Given that QS bisects PQR making mPQS the same as the mSQR, the numerical value of x is 4

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0.36 converted into a fraction

Answers

Answer:

9/25

Step-by-step explanation:

0.36 = 36/100

36 / 4 = 9

100 / 4 = 25

9/25

Steve has 6 3/4 pounds of ground beef to make hamburgers for a party it takes 3/8 of ground beef to make a hamburger how many burgers can Steve make

Answers

The number of burgers Steve can make = 18

In this question, Steve has 6 3/4 pounds of ground beef to make hamburgers for a party.

It takes 3/8 of ground beef to make a hamburger.

We need to find the number of burgers Steve can make.

First we convert the improper fraction 6 3/4 into a proper fraction.

6 3/4 = 27/4

For 1 hamburger 3/8 of ground beef is required.

Let n be the number of burgers Steve can make.

n = (27 / 4) / (3 / 8)

n = 27/4 × 8/3

n = 9 × 2

n = 18

Therefore, the number of burgers Steve can make = 18

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Paula pays $19.92 for 2.4 pounds of walnuts. What is the price per pound of walnuts?

Answers

Answer:

8.30

Step-by-step explanation:

19.92 / 2.40 = 8.30

8.30 is the amount per pound.

Answer: 8.30

Step-by-step explanation: We know that Paula Paid 19.92$ for 2.4 pounds

Price of 1 Walnut = 19.92 ÷ 2.4 = 8.30

Find the circumference of the circle with area 1÷4πd² cm²​

Answers

Answer:C=3.54

Step-by-step explanation:

If the average of 292, 305, 415, and x is 343, what is the value of x?

Answers

343 x 4 = 1372

1372 - 415 = 957 - 305 = 652 - 292 = 360

x = 360

The length of a rectangle is two more than triple the width. If the perimeter is 84 inches, find the
dimensions.
The width is
The length is
Submit Question
inches.
inches.

Answers

Answer:

The length of rectangle seven more than triple the width. If the perimeter 126 inches, find the dimensions The width inches. The length inches.

What is the coefficient of the x2-term of the algebraic expression 2 x 4 + x squared minus x + 7?

Answers

The Coefficient of x^2  in algebraic Expression 2x^4 + x^2 -x +7 will be 1.

What is Algebraic expression ?

Algebraic expressions are the idea of expressing numbers using letters or alphabets without specifying their actual values. The basics of algebra taught us how to express an unknown value using letters such as x, y, z, etc. These letters are called here as variables. An algebraic expression can be a combination of both variables and constants. Any value that is placed before and multiplied by a variable is a coefficient.

Given algebraic  Expression is :

2x^4 + x^2 -x +7

Now,

The coefficient is the constant term multiplied with the variable.

Therefore, here the Coefficient of of x^2 will be 1.

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Carol brought 4 pies to a party. Each serving of pie is 1/8 of an entire pie. How many servings of pie did Carol bring to the party?

Answers

Answer:

32

Step-by-step explanation:

do 4 divided by 1/8

if you flip the fraction it will become 4/1 × 8/1 = 32

What is the domain of the graph below.

Answers

Answer:

acbs

Step-by-step explanation:

One bar of candy A and two bars of candy B have 763 calories. Two bars of candy A and one bar of candy B contain 773 calories. Find the caloric
content of each candy bar
Candy bar A contains calories and candy bar B contains
(Simplify your answers.)
calories

Answers

Answer:

A = 261 calories. and B = 251 calories

Step-by-step explanation:

A + 2B = 763

2A + B = 773

---------------------------

-2(A + 2B = 763)

-2A - 4B = - 1526

2A + B = 773

-----------------------------

-3B = - 753

B = 753/3

B = 251

Candy bar B has 251 calories

now let's find A

A + 2B = 763

A + 2 (251) = 763

A + 502 = 763

A = 763 - 502

A = 261

Candy bar A has 261 calories

fraction numerator 8 over denominator 2.4 end fraction equals space 9 over x

Answers

Answer:

x = 2.7

Step-by-step explanation:

8/2.4 = 9/x

Cross multiply.

8x = 2.4 × 9

8x = 21.6

8x/8 = 21.6/8

x = 2.7

Of the 30 champions of the National Spelling Bee from 1974 to 2003, 16 are boys. Find the ratio of the number of champions who are girls to the number who are boys.

Answers

Answer:

14/16 or 7/8.

Step-by-step explanation:

We know the total champions is 30. There are 16 boys, so to find the number of girls we can do 30-16. This gives us 14. Now we know that there are 16 boys and 14 girls, and the question is asking for the ratio of champions who are girls to the number who are boys. This means the ratio would simply be 14 to 16, for every 14 girls there are 16 boys. You can simply this ratio to 7 to 8, meaning for every 7 girls there are 8 boys.

Which of the following represents a function?

x -10 -9 0 5
y 19 17 25 19

A value 0 in x corresponds to 7 in y, and 52 in y. A value 1 in x corresponds to 4 in y. A value 2 in x corresponds to 16 in y. A value 3 in x corresponds to 7 in y.

{(0,0), (-4,3), (7,1), (-4,5), (3,2)}

A graph plots the points (negative 3, 4), (negative 3, negative 4), (negative 2, 3), (negative 2, negative 3), (negative 1, 0), (1, 0), (2, 3), (2, negative 3), (3, 4) and (3, negative 4) on the x y coordinate plane.

Answers

Answer is the first chart of numbers

x -10 -9 0 5
y 19 17 25 19

✅. Reason: there is only one x for every y value so it will pass the vertical line test

These below are NOT a function

A value 0 in x corresponds to 7 in y, and 52 in y. A value 1 in x corresponds to 4 in y. A value 2 in x corresponds to 16 in y. A value 3 in x corresponds to 7 in y.
❌ no, it has (0, 7) and (0, 52), two same x values

{(0,0), (-4,3), (7,1), (-4,5), (3,2)}
❌no, it has two same x values of -4

A graph plots the points (negative 3, 4), (negative 3, negative 4), (negative 2, 3), (negative 2, negative 3), (negative 1, 0), (1, 0), (2, 3), (2, negative 3), (3, 4) and (3, negative 4) on the x y coordinate plane.
❌ no, it has multiple same x values of -2, -3, 2 and 3.

See attachment showing why the same x value repeated will not be a function because it will not pass the vertical line test

Problem solved!!

Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar.

Write the least common multiple of 7 and 14.

Answers

14 because 7x2 is 14 and 14x1 is 14

On the graph f(x)=cos x and the interval [-2pie,0] for what value of x does the function cross the x-axis?

Answers

The function f(x) = cos x crosses the x-axis at x₁ = - 0.5π and x₂ = - 1.5π.

For what values does the cosine function cross the x-axis?

Cosine function is a function bounded between - 1 and 1 and whose period is 2π, all the values of x such that the cosine function crosses the x-axis is described by the following expression:

cos x = 0        (1)

Then, by inverse trigonometric functions:

x = cos⁻¹ 0

x = 0.5π ± π · i, where i is a non-negative integer.

If we know that i = 1 and i = 2, then the values of x within the interval [- 2π, 0] are, respectively:

x₁ = - 0.5π, x₂ = - 1.5π

The function f(x) = cos x crosses the x-axis at x₁ = - 0.5π and x₂ = - 1.5π.

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Norm's electric bill for December 2013 was $149.32. In 2014 the electric bill was $194.31. Next year Norm expects the bill to be the 2013 amount plus $25.00 more than the difference between 2013 and 2014. What is the new bill expected to be?

Answers

A): 2013 = 149.32

Find difference of: 194.31

2014 = 194.31 149.32

= 44.99

2015 Total Will Be:

B):

149.32 + 25 = 174.32

(2013)

174.32 + 44.99 = 219.31

(B) (A)

Which personal expense did the Penders spend more on than they had budgeted? Refer to Figure 3.4 on page 165 of the ebook or at the back of the packet. Figure 3.4.pdf Download Figure 3.4.pdf

Group of answer choices

Credit Cards & Clothing

Clothing

Clothing & Pocket Money

Credit Cards & Pocket Money

Answers

The personal expense that the Penders spent more on than they had budgeted is:

Credit Cards & Pocket Money to the tune of $ 23.75 (Option C)

What is a budget?

A budget is an estimate of revenue and costs for a given period of time that is generally created and re-evaluated on a regular basis. Budgets may be created for an individual, a group of individuals, a company, a government, or almost anything else that generates and spends money.

What is the justification for the above answer?

The budgeted amount for Credit Card was $50. Total amount spent was $60. Hence the excess amount spent is $10.

The budgeted amount for Pocket money was $80. Total amount spent was $93.75. Hence the excess amount spent is $13.75.

Hence total amount spend over budget is $23.75

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Addison worked at three part-time jobs last week. At one job, she worked 11 hours at a salary of $21 per hour, at another she worked 11 hours at $19 per hour,
and at the third she worked 17 hours at $18 per hour. What was her mean hourly wage?

Answers

11*21+11*19+17*18/3=746/3=248.3

"divide 9 by p, then multiply 2 by the result" i need the expression for this, thank you

Answers

Answer: The expression would look like this p/9 (2)

Step-by-step explanation: You should make it a fraction by putting the p on top and 9 on bottom and in parentheses you put in the 2!

Hope this helped! :D

Gabriela plans to save at least $5,600 to buy a car. She already has $2,500 saved and plans to save $500 each month.

Which inequality represents how many months (m) it will take Gabriela to save at least $5,600?
m < 6
m > 6
m ≤ 6
m ≥ 6

Answers

Inequality represents number of months (m) it will take Gabriela to save at least $5,600 is m ≥ 6.

As given in the question,

Amount Gabriela plans to save to buy a car = at least $5,600

Amount she already has = $2500

Amount she needs to save at least = $(5600 -2500)

                                                          =$3100

Plans to save each month =$500

Inequality to represents the number of months to save at least $5600

m ≥ 3100/500

⇒ m ≥ 6

Therefore, inequality represents number of months (m) it will take Gabriela to save at least $5,600 is m ≥ 6.

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Baljeet invested $5500 at a simple annual rate of 4.8% for 6 years. What is the total future value of the investment?

State your answer in terms of dollars rounded to the nearest cent, but do not include a $ sign or the word "dollars" with your response.

Answers

Answer:

[tex]a = p(1 + in) \\ = 5500(1 + 0.048 \times 6) \\ = 7084[/tex]

PLEASE HELP
the length of a rectangle is three more than double the width. if the perimeter is 126 inches, find the dimensions.

Answers

Answer:

Length of the rectangle = 43 inches

Width of the rectangle= 20 inches

Step-by-step explanation:

Let the width (w) of the rectangle be = x inches

-> Length (l) of the rectangle will be = (2x + 3) inches.

Perimeter of the rectangle = 126 inches

-> 2(l + w) = 126

-> l + w = 126/2

-> l + w = 63

-> x + (2x + 3) = 63

-> 3x = 63 - 3

-> 3x = 60

-> x = 60/3

-> x = 20

-> 2x + 3 = 2(20) + 3 = 43

Thus,

Length of the rectangle = 43 inches

Width of the rectangle= 20 inches

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