Mathematics Middle School

a cylinder has a height of 19 feet. the volume is 3,818.24 cubic feet. what is the radius of the cylinder? use ​π ≈ 3.14

Answers

Answer 1

Answer:

The radius is 32 cubic feet

Step-by-step explanation:

The formula to find the volume of a cylinder is V=Bh or V=πr2h. So you would need to work backwards because you already have the volume and height.

3,818.24= 3.14r2*19

3,818.24= 3.14r*38

Because of the associative property you can multiply 3.14 by 38

which is 119.32

So the next expression would be

3,818.24= 119.32r

How do you reverse multiplication? You need to devide both sides. In this case, you need to divide 3,818.24 by 119.32.

To get 32=r

Answer 2
32sq ft. your equation would be 19 x 3.14r2=3,818.24

Related Questions

please i need help asap

Answers

I think it is c but that is just an educated guess.

Answer:

Step-by-step explanation:

radius = 0.25 inch

Volume of  ceramic ball = [tex]\frac{4}{3}\pi r^{3}[/tex]

                                        [tex]= \frac{4}{3}*3.14*0.25*0.25*0.25\\\\= \frac{0.19625}{3}\\\\=0.07 cubic feet[/tex]

Volume of 200 balls = 200 * 0.07

                                  = 14 cubic feet

1 cubic feet = 2 ounces

14 cubic feet = 2*14 =  28 ounces

A cheetah can run 67.52 feet per second. How fast can a cheetah run in 3.6 seconds? Show your work, write your answer in a complete sentence

Answers

Answer:

hi

Step-by-step explanation:

Well, you would just multiply the feet per second (67.52) by the amount of time (3.6) in order to get the final distance in 3.6 seconds (243.073)

So, a cheetah can run about 243.073 feet in 3.6 seconds

Natalie inspects new pants at a factory. Of the first 56 pairs of pants she inspected 49 were acceptable. What is the experimental probability that the next pair of pants will be acceptable? answers
1. 1/2
2. 7/8
3. 5/4
4. 22/25

Answers

Answer:

B. 7/8

Step-by-step explanation:

Answer: 2.

Step-by-step explanation:

Find the measure of each angle listed. The m∠ 2 = 153.

Answers

Angels 4,8 and 6 are 153

The rest are 27

cynthia needs to cover the entire surface of this cone with a new coat of paint. what is the minimum amount she will need?

Answers

Answer:

B

Step-by-step explanation:

The answer is B

That picture is very blurry Srry if it’s wrong

13. A right triangle has sides 8 and 12.


a. Find the missing side if 8 and

12 are legs.


b. Find the missing side if 8 and

12 are a leg and hypotenuse.

Answers

A if 8 and 12 are legs the missing side would be 14.42
B if 8 is a leg and 12 is hypotenuse then the other leg would be 8.94
So the pythagorean theorem is a^2 + b^2 = c^2. in this case it would be 12^2 + 8^2 = c^ 2

Explanation:
12^2 = 144
8^2= 64
64 + 144 = c^2
208 = c^2
in order to find c we need to square root both sides of the equation, you can plug that into the calculator.
c = about 14.4

pls help plllllllssssssssssssssssssssssssssssss helpppppppppppppppppppppppp

Answers

Answer:is it a bill nye vid

Step-by-step explanation:

What is the total of x?

Answers

I think 16 I don’t know if I’m right
abcedghijklmnopqrstuvwzyz

WILL MARK BRAINLIEST!!!!!
For what values of x:
A. Are the values of the polynomial x^2-5x-3 and 2x-5 equal
B.Is the binomial 7x+1 equal to the trinomial 3x^2-2x+1
C. Is the trinomial -2x^2+5x+6 equal to the binomial 4x^2+5x?

Answers

Answer:

Bro imagine still playing fortnite o_o

Step-by-step explanation:

Mr. Jacobs wants to save over $3,400 for a car. He has a savings account balance of $800 and will make equal weekly deposits for the next 25 weeks. How much money should Mr. Jacobs deposit each week?

Answers

Answer:

i think its D

Step-by-step explanation:

but im not very sure about it

Help please I promise to give brainliest

Answers

Answer:

60

20

20

Step-by-step explanation:

Step-by-step explanation:

60

20

20

is the answer

dor the experimental probability

PLEASE HELP URGENT!!! ILL GIVE BRAINLIEST

You roll a six-sided number cube and flip a coin. What is the probability of rolling a number greater than 4 and flipping heads? Write your answer as a fraction in simplest form.

The probability is __.

Answers

Answer:

The probability for the coin is 1/2. And the probability for dice is 2/6.

Step-by-step explanation:

The answer is 1/2 because it’s a 50/50 chance

HELP PLEASE
use the given information to answer each question.

7. A dress that normally sells for $72 is on sale for $45. what is the percent decrease in the price?

8. A home purchased for $120,000 in 2012 is sold for $156,000 in 2015. what is the percent increase in the price?

9. the CD warehouse purchases CDs for $6 each and sells them for $9 each. what is the percent increase in the price?

10. the CD warehouse is having a clearance sale. A CD player that originally sells for $60 is now priced at $36. what is the percent decrease in the price?

11. the local highschool sold 1914 tickets this year to its spring musical. That was 174 more rickets sold than last year. what is the percent increase in the number of tickets sold?

12. Ken's heart rate went from 74 beats per minute while resting to 148 beats per minute while exercising. What is the percent increase In his heart rate

Answers

7.
Discounted price X
————————— = ———
Original Price 100

45 x
—- = —-
72 100

Cross multiply

45 times 100= 4500
72 times x= 72x

72x=4500

Divide

4500/72= 62.5%

PLEASEEEEEEEEEEEEEEEEREEEEE

Answers

1 3 and 5 are the ones I got

Help fast!!!!!!!!!!
1. Each Side of the barn is 9 meters long.
A. What is the barns perimiter?
B. What is the barns area?
2. A rectangular peice of metal is 10 inches wide and 14 inches long.
A. Whats the permiter?
B. Whats the area?

Answers

1.) a.) 36 b.) 81
2.) a.) 48 b.) 140
(For perimeter you add up all the sides)
(For area you multiply length times width)
It will be 2 b because it is smaller

Cederic made $24 in simple interest off of money he invested in the bank. He put $200 in the bank and left it there for 2 years. What was the interest rate that the bank gave him? (HINT: Don't forget to convert this number to a percent.)

Answers

Answer:

4,800 i don't know my boiiiiiii

Step-by-step explanation:

I don’t know I rlly don’t

i just put false becuase i was not sure please say yes or no

Answers

Yes is the answr (true)
Yes the answer is true

Is anyone else struggling with math

Answers

Answer:

Practice makes perfect

There are 32 munchkins in the box. You want to distribute the munchkins to Amir and Isaac so that the ratio of Amir's munchkins to Isaacs is 5:8.

How many munchkins will each person get? Show/explain your work

Answers

Answer:

Amir will get 160/13 or 12 [tex]\frac{4}{13}[/tex] and Isaac will get 20 [tex]\frac{9}{13}[/tex]

Step-by-step explanation:

Lets say that the ratio is [tex]5x:8x[/tex]. Then, let's put this into an equation:

[tex]5x+8x=32[/tex]

Then, if we solve, we get:

[tex]13x=32, x=\frac{32}{13} \text{ or } 2\frac{6}{13}\\[/tex]

Then, we know that Amir's share is [tex]5x[/tex], so [tex]\frac{32}{13}\cdot5=160/13 \text{ or } 12 \frac{4}{13}[/tex].

Then, Isaacs share is [tex]8x[/tex], so [tex]8\cdot\frac{32}{13}=20\frac{9}{13}[/tex]

Hope it helps!!

Answer:

Amir = 12 and Isaac = 20

Step-by-step explanation:

Given

[tex]Amir : Isaac = 5 : 8[/tex]

[tex]Munchkins = 32[/tex]

Required

Amount of munchkins given to each person

For Amir, the amount is calculated as:

[tex]Amir's = \frac{Amir}{Amir + Isaac} * Munchkins[/tex]

[tex]Amir's = \frac{5}{5+8} * 32[/tex]

[tex]Amir's = \frac{5}{13} * 32[/tex]

[tex]Amir's = \frac{5 * 32}{13}[/tex]

[tex]Amir's = \frac{160}{13}[/tex]

[tex]Amir's \approx 12[/tex]

For Isaac, the amount is calculated as:

[tex]Isaac's = \frac{Isaac}{Amir + Isaac} * Munchkins[/tex]

[tex]Isaac's = \frac{8}{5 + 8} * 32[/tex]

[tex]Isaac's = \frac{8}{13} * 32[/tex]

[tex]Isaac's = \frac{8 * 32}{13}[/tex]

[tex]Isaac's = \frac{256}{13}[/tex]

[tex]Isaac's \approx 20[/tex]

Maria needs 3/4 foot of string to make each bracelet. How many feet of string does she need to make 9 bracelets?

Answers

Answer:

6.75 foot

Step-by-step explanation:

3/4 foot of string is needed for one bracelet so we multiply that with 9:

3/4*9

=27/4

=6.75 foot

If each bracelet needs 3/4 of string therefore in order to make it easier turn the fraction into decimal by dividing the numerator and the denominator which is 0.75 then multiply by the amount of bracelets which is 9 which gets you to 6.75 in a fraction it’s
6 3/4.
hope this helps!

on the speedway its 80 mph how many meters per second is it

Answers

I just looked this up but 35.7632

Answer:

35.76 Meters per second.

Step-by-step explanation:

(Exact: 35.7632 meters per second)

Evaluate the following expression. Type your answer as a number.
14 - 2 ( 11 - 5 ) + 7²

Answers

Answer

The answer is 51

PEMDAS

14 - 2 ( 11 - 5 ) + 7^2
14 - 2 ( 6 ) + 7^2
14 - 2 ( 6 ) + 49
14 - 2 + 49
12+ 49

your answer is 71

Help pleaseeeee asapppp!

Answers

Answer:

The third and fourth one

Step-by-step explanation:

Hii,

When you divide by a negative, the sign flips. In the third and fourth one you're dividing by a negative so the inequality sign flips. For the rest, you're not.

Hope this helps :)

the correct answer is the third and fourth one because it makes the most sense and it’s a closest answer

Shelley is searching online for airline tickets. Two weeks​ ago, the cost to fly from Orlando to Hartford was 300​$. Now the cost is ​375$. What is the percent​ increase? What would be the percent increase if the airline charges an additional​ $50 baggage fee with the new ticket​ price?

Answers

Answer: 25 percent rawrrrrrrrrrrrrrrrrrrrrrrrrrr

Answer:

What is the percent​ increase? 25%

What would be the percent increase if the airline charges an additional​ $50 baggage fee with the new ticket​ price? 41.67%

(PLS HELP ASAP /BRAINLIST! )

Answers

Answer:

16. [tex]70\frac{1}{8}[/tex]ft cubed

17. [tex]166\frac{1}{4}[/tex]yd cubed

Step-by-step explanation:

this should be right

ANSWER
16- 70 1/8 ft cubed
17- 166 1/4 yd cubed

EXPLANATION
Volume= Length x Width x Height

A car costs $30,000 when purchased as new and depreciates at a rate of 18% per year.

1. Write an exponential decay model to represent the situation. Be sure to define the variables.
2. Find the value of the car after 10 years.

Answers

9514 1404 393
Answer:
v(t) = 30000×0.82^t . . . value in dollars after t years
v(10) ≈ 4123 . . . . dollars
Step-by-step explanation:
The general form of the decay model is ...
f(t) = f(0)×(1 -decay rate)^time
where the decay rate is a fraction between 0 and 1, and the time is expressed in the same time units as the decay rate. The multiplier f(0) is the initial value that is decaying.
In this problem, the initial value is $30,000 and the decay rate is 18% per year. So, we can write a function v(t), where v is the car's value in dollars, and t is the number of years after it starts depreciating.
v(t) = 30,000×(1 -0.18)^t
v(t) = 30,000×0.82^t
__
The car's value in 10 years is ...
v(t) = 30,000×0.82^10 ≈ 4123.44
The value of the car after 10 years is about $4,123.

*TEN POINTS* Answer the question. Deals with functions.

Answers

Answer:C is your answer

The function is limited to y=3

Step-by-step explanation:

Which inequality would be used to answer the following:

Tickets to the zoo are $8 per person. If you have a maximum of $50 to spend on tickets, how many people can you take to the zoo?
Please Explain To
A. 8x > 50
B. 8 + x > 50
C. 8x < 50
D. x - 8 < 50

Answers

I’d say the answer is B

Find the area of the figure and choose the appropriate result.

Answers

Answer:

A- 24m

B- 18.9

C. 11.4

Total- 54.3

Step-by-step explanation:

Answer:

41.7 square meters

Step-by-step explanation:

First, rectangle A:

4 x 6 = 24 square meters

Second, rectangle B:

We know the length of this section is 3.5m. For the height/width, we can look at rectangle C. The height of C is 3.8m, and we see the part of C that is NOT part of B is 2m long. So we subtract 2 from 3.8 to find the height of B.

3.8 - 2 = 1.8m

Then, for the area of B:

3.5 x 1.8 = 6.3 square meters

Third, rectangle C:

3 x 3.8 = 11.4 square meters

Add up areas of A, B, C:

24 + 6.3 + 11.4 = 41.7 square meters

write a division expression to represent the question how many 1/5s are in 2 (ILL GIVE BRAINLIEST P:EASE ANSWER FAST PLEASE)

Answers

Answer:

2 / (1/5)

Step-by-step explanation:

(Is that what you meant?)

Answer:

10/5 = 2

Step-by-step explanation:

1 sec = 1/5. 5 sec = 5/5 (1/1). 10 sec = 5 sec *2 = 10/5 sec.

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