Mathematics High School

Robert threw a rock off a bridge into the river. The distance from the rock to the river is modeled by the equation h=-16ť – 16t+ 60, where h is the height in feet and t is the time in seconds. Find how long it took the rock to enter the water.​

Answers

Answer 1

Answer:

1.5 seconds

Step-by-step explanation:

h=-16t² – 16t+ 60

When the rock enter the water, the height is 0. ... h=0

0 = -16t² – 16t+ 60 = -4 * (4t² - 4t +15) = -4* (2t - 3) (2t +5)

2t-3=0   or 2t+5 = 0

t = 3/2  or t = -5/2   (time can't be negative)

t = 3/2   or 1.5

Robert Threw A Rock Off A Bridge Into The River. The Distance From The Rock To The River Is Modeled By

Related Questions

the nearest ten 11,150 is 11,348 rounded to the nearest ten. nearest thousand 11,100 is 11,348 rounded to the nearest thousand. explain how you rounded these numbers

please don't answer with files they dont work i will try to give brainliest to who ever answers correct

Answers

Answer:

Step-by-step explanation:

When you round to the nearest ten, look at the number in the ones value i.e the last digit. If it is 5 or above it then it rounds to the top. If it is below 5 then it rounds to the bottom

e.g. 56 to the nearest ten would round to 60 because 6 is greater than 5. However 73 to the nearest ten would be 70 because 3 is less than 5.

This is why 11348 to the nearest ten is 11150. 8 is greater than 5 so it rounds to 50 instead of 40.

The same concept applies to when you round to the nearest thousand. If the number in the hundreds value is greater than 5 or is 5 your round to the top. If the number is less than 5 you round to the bottom

This is why 11348 to the nearest thousand is 11100. Since 3 is less than 5 it rounds to the bottom which is 1000 instead of 2000.

Please look at photo and ignore already selected answer

Answers

Answer:

Question (A) firgue b is pallorgram

Question ( B) Only A is a rentengle

Question (C) is already right

Step-by-step explanation:

A. Shape B
B. Shape A
C. Shape C

Mark as brainliest plz

Calculate the yield statistic for a hotel with an actual room revenue of $525,800 and a potential rooms revenue of $600,500.

Answers

Answer:

The yield statistic is: 87.6%

Step-by-step explanation:

Given

[tex]ARR = \$525800[/tex]

[tex]PRR = \$600500[/tex]

Required

Determine the yield statistic

This is calculated as:

[tex]Yield = \frac{ARR}{PRR}[/tex]

[tex]Yield = \frac{\$525800}{\$600500}[/tex]

[tex]Yield = \frac{525800}{600500}[/tex]

[tex]Yield = 0.87560366361[/tex]

Approximate

[tex]Yield \approx 0.876[/tex]

Express as percentage

[tex]Yield \approx 87.6\%[/tex]

A car travels 30 km in 5.5 hours and 400 km in 5.5 hours find the average speed of the car during the entire journey

Answers

Answer:

This is your answer

Answer:  39.09 km per hour average

Step-by-step explanation:

add total distance and divide by total time

(30+400)/(5.5+5.5)

430/11=39.0909

7. If m∠AEB = 75°, then m∠AED =
8. If m∠1 = 35°, then m∠4 =

Answers

Answer:

7. If m∠AEB = 75°, then m∠AED = 105.

8. If m∠1 = 35°, then m∠4 = 35.

Write an explicit formula for this table

Days 1 2 3 4 5
Views 17 33 49 65 81

Answers

Answer:

Step-by-step explanation:

and it's an arithmetic sequence.

Simplifying Complex Fractions

​

Answers

Math is garbage man

Step-by-step explanation:

Bc it sucks

Answer:

Step-by-step explanation:

what is the median for 9, 7, 7, 4, 7, 3, 6, 5,

Answers

Answer:

The Median is 6.5

Step-by-step explanation:

Other options in case

Mean - 6

Median - 6.5

Mode - 7

Range - 6

The median is 6 and 5

Can someone help me with these two charts please

Answers

The answer to this question is you need to use the BOFA Method hope this helped

what equation could be used to determine 23% of 122?​

Answers

First, convert 23% into a fraction.

23% =

[tex]23 \div 100 = \frac{23}{100} [/tex]

Now the expression to determine 23% of 122 is

[tex] \frac{23}{100} \times 122 \\ = ( \frac{23}{100} )(122)[/tex]

Answer:

23/100*112this is the answer

If the compound interest paid for rupees 4000 is rupees 420 then find the

amount paid at the end of the time period​

Answers

Answer:

[tex]Amount = Rs4420[/tex]

Step-by-step explanation:

Given

[tex]Principal = Rs4000[/tex]

[tex]Interest = Rs420[/tex]

Required

Determine the amount paid

This is calculated as:

[tex]Amount = Principal + Interest[/tex]

[tex]Amount = Rs4000 + Rs420[/tex]

[tex]Amount = Rs4420[/tex]

you buy two packages of almonds and mix them together into one bowl one package is 4.08 kg and the other is 6.81 kg how much is in the bowl

Answers

ummmmmmmmmmmmmmmmmm 10.89kg

In a right triangle, if sin 0 = 8/17 what is cos 0 explain?

Answers

Answer:

We have sin² x + cos² x =1 for all real x.

Therefore, sin² x = 1 – cos² x = 1 – (8/17)² = 1 – 64/289 = 225/289 = (15/17)².

However, remember that if x² = a², then x can be +a or –a.

Therefore, sin x can be either –15/17 or +15/17.

Everyone but Anirban so far has forgotten the negative solution.

Step-by-step explanation:

Given that sinθ=817 and cosθ<0 , we have: cosθ=−√1−sin2θ. cosθ=−√1−(817)2. cosθ=−√1−64289.

Suppose a scientist has 13 liters of acid and she needs 16 liters for an experiment.
How many more liters of acid does she need for the experiment?

Which equation best describes this situation?

a. 16+x=13

b. 13+x=16

c. x=13

d. x=16

Answers

B cause 13 plus x is equal to the 16 liters that u need and u already have 13 liters

The length of a rectangle is 3 cm more than four times the width (This will be your first equation. The second equation comes from the perimeter formula below). If the perimeter of the rectangle is 56 cm, what are its dimensions?

Answers

Answer:

the width is 5 and the length is 23

Step-by-step explanation:

2x+2(4x+3)=56

10x+6=56

10x=50

x=5

4(5)+3=23

A person invested $7,400 in an account growing at a rate allowing the money to
double every 6 years. How much money would be in the account after 4 years, to the
nearest dollar?

Answers

Using an exponential function, it is found that $11,747 will be in the account after 4 years.

What is an exponential function?

An increasing exponential function is modeled by:

[tex]A(t) = A(0)(1 + r)^t[/tex]

In which:

A(0) is the initial value.r is the growth rate, as a decimal.

In this problem, considering the initial investment of $7,400, and the fact that it doubles every 6 years, the equation is given by:

[tex]A(t) = 7400(2)^{\frac{t}{6}}[/tex]

Hence the amount in 4 years is given by:

[tex]A(4) = 7400(2)^{\frac{4}{6}} = 11747[/tex]

More can be learned about exponential functions at https://brainly.com/question/25537936

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Answer:

Step-by-step explanation:

11747

(13x + 12x) divided by 4 = 10

What is x

Answers

Answer: x is 8/5

Step-by-step explanation:

Answer:

x = [tex]\frac{8}{5}[/tex]

Step-by-step explanation:

Given

[tex]\frac{13x+12x}{4}[/tex] = 10 ( multiply both sides by 4 to clear the fraction )

25x = 40 ( divide both sides by 25 )

x = [tex]\frac{40}{25}[/tex] = [tex]\frac{8}{5}[/tex]

For a polygon with 10 sides, which equation below represents the sum of the interior angles in the polygon?

Answers

Answer:

I mean I don't know your options, but the answer is probably something like y=180x

Step-by-step explanation:

Answer:

1440

Step-by-step explanation:

Sum= (180)(8)=1440

Better:

Sum= (x-2)(180)

x represents the number of sides

So it would be

sum=(10-2)(180)

The answer then would be 1440

NEED HELP ASAP
Charlie and Lupita both opened bank accounts and deposited $25 each. Lupita used her debit card to buy lunch for $10. Charlie used his debit card to buy a new video game for $50. Which of the following statements about their accounts is NOT true?
Charlie owes the bank more than Lupita has in her account.
The value of Charlie's account is greater than that of Lupita's.
The money in Lupita's account is not enough to pay off Charlie's debt.
Even if Charlie were to add $25 to his account, its value would still be less than Lupita's.

Answers

Answer:

B

Step-by-step explanation:

please help me tysm if you do

Answers

Answer:

R=155°

S=25°

T=155°

Step-by-step explanation:

R + 25° =180°

R = 180° - 25°

R = 155°

(2) S + 155° =180°

S = 180° - 155°

S = 25°

T = R because t is opposite of r

I hope this was helpful

How much does the Human body consume calories minus 2,400 plus 3,500 equals what (please help)

Answers

Answer:

answer is 5900 calories. hope this helps

3x + 2y = -2
2x - 2y = -18

Answers

Answer:

What’s your Question?

Step-by-step explanation:

A line has an unlimited amount of points on it. Why do you think this is true?

Answers

Answer:

bc  if it has no points  it will go on infinitely

Step-by-step explanation:

Line has at least two point, but it can have unlimited amount of point. Even a short line can have unlimited amount of points.

In circle O below, what is the value of f ?

Answers

Answer:

I believe the answer is 15 .

Hope it helps ^^

Kayla spends 2 tickets on a ride at the amusement park. She has 6 tickets left. Write a subtraction equation to show the fraction of tickets Kayla has left

Answers

6-2=4 tickets




Explanation

Find XY...............................

Answers

I believe that XY=9. Divide 12 by 8 then you get 1.5 then multiply 1.5 by 6 to get 9 because BC is the corresponding side.

Pls help, I really need this answer!!!!

Answers

If you think about it, an octagon is made up of 8 triangles. So you first find the area of one triangle then multiply it by 8 for the total area:
A=1/2bh
A=1/2(9.9)(12)
A=59.4

59.4 x 8= 475.2

Therefore the total area for the octagon should be 475.2 units^2

Hope this helps !


helpppppppp
Find the hypotenuse of the triangle, the
distance between points (4, 4) and (-2,-2).
[?]
(4.4)
Enter the number that
6 goes beneath the radical
symbol.
(-2,-2)
6
Enter

Answers

The hypotenuse can be solved by this formula. X^2 = 6^2 +6^2

X^2=64
Usually you cut it down to 8 but it wants the squared form so 64.

Karl earned scores of 58, 88, 80, and 70 on his first 4 Chemistry tests. What is the minimum score he needs to earn on his fifth test to ensure that his average score for the 5 tests will be at least 75 ?

Answers

Answer: 50

Step-by-step explanation:

First let's set up an equation by calling the score he needs to get, x:

[tex]\frac{58 + 88 + 80 + 70 + x }{5}[/tex] = 75

58 + 88 + 80 + 70 + x = 75 x 5

296 + x = 375

x = 79

Karl scored 79 marks in 5th test.

What is Average?

The ratio of the sum of the values in a particular set to all the values in the set is the mean value, which is the definition of the average.

Average = (Sum of values)/(Total number of values).

Given:

Karl earned scores of 58, 88, 80, and 70.

The average of 5 test = 75

let the marks scored in 5th test is x.

Then, (x+ 58 + 88 + 80 + 70)/ 5= 75

x+ 58 + 88 + 80 + 70 = 375

x + 296 = 375

x= 375- 296

x = 79

Hence, the marks on 5th test is 79.

Learn more about Average here:

https://brainly.com/question/27193544

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Peter is 8 years younger than Jonne. In 5 years time, Jonne will be twice as old as Peter. How old is Peter now?

Answers

Answer:

Age of Peter = 3 year

Step-by-step explanation:

Given:

Peter is 8 years younger than Jonne

Assume;

Age of Jonne = a

So,

Age of Peter = a - 8

After 5 years,

2[a - 8 + 5] = a + 5

2a - 6 = a + 5

a = 11

Age of Jonne = 11

Age of Peter = 11 - 8

Age of Peter = 3 year

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