Mathematics Middle School

Describe in words how to find the surface area of a cylinder if the radius is 5cm and height is 18cm. The formula is =+.Once you are finished, explain what you would change if it was an open cylinder or a "cup".

Answers

Answer 1
Surface area of cylinder is 2(pi)r^2 + 2(pi)rh
r=5cm
h=18cm
*fill in
50pi + 180pi = 230pi

Related Questions

1. Of the first 40 United States Presidents, 20% were former teachers. How many of the presidents were teachers?

Answers

8 is because 20% of 40 - 8

Answer:

8 presidents

Step-by-step explanation:

We have to find 20% of the first 40 United States

20% = 0.2

0.2 former teachers / 40 first presidents = 8 presidents that were teachers

I hope this helps u! :D

Three rectangular prisms are shown below. Which statement is true? (4 points)

Answers

Answer: C is true

Step-by-step explanation:

If you do the multiplication for prism B (5 x 2 x 3 = 30) and for Prism C (7 x 2 x 2=28 making c have a higher volume

C has a higher volume than prism c

MUST ANSWER BOTH QUESTIONS FROM ATTACHMENT.
WILL GIVE BRAINLEST
IM ON A TIME LIMIT BY THE WAY

Answers

Answer:

Pheonix Lights, MIddle 3 for the 2nd question.

Step-by-step explanation:

Honestly just disconnect your WiFi then come back after timer is done and tell your teacher you lagged out lol

Mary earns $10 per hour and $5 for each delivery she makes. She wants to earn more than $140 in an 8-hour workday. What is the least number of deliveries she must make to reach her goal?

Answers

Answer:

18 deliveries

Step-by-step explanation:

140/8=17.5

round to 18

She must make 12 deliveries to reach her goal.
Reason is you do 10*8=80
Then take the 80 and do 140-80=60
Then you take the 60 remainder and do 60/5=12 deliveries

Please HELP!!! 12 Points

Answers

Answer:

it is Going to be A

Step-by-step explanation:

It’s Going to be A

A small bag has 8 black beans, 5 white beans, and 12 red beans. Find the probability of picking a red then a black bean if you do not replace the first bean.

A. 0.16

B. 0.32

C. 0.3

D. 0.5

Answers

Answer:

the answer is A

Step-by-step explanation:

because 8 divided by 25 (all the beans) is .32

And  12 divided by  25 is .48

So if you subtract .48 by .32 then you get .16

let me know if its right

The answer is A. 0.16

Can someone plz help me I’m being timed!!!

Answers

Answer:

on the x axis

Step-by-step explanation:

on the x axis

X axis
Mark me as the brainliest

please help me with this question. marking brainlist if correct Thanks!

Answers

Answer:

The first one - on a number line -2 1/6 is to the left of -2 2/3

Step-by-step explanation:

Answer:

The first one

Step-by-step explanation:

-2 1/6 is less than -2 2/3

Simplify the expression below

12 / 3/5
(12 divided by 3/5)

Answers

Answer:

2

Step-by-step explanation:

Answer:  First, you need to convert 3/5 to a decimal by dividing 3 by 5

3/5=0.6

Now, you can divide 12/0.6

12/0.6=20  i hope this helps

One day the cafeteria supervisor recorded the number of students who chose each type of beverage. Juice 20, Milk 37, Water 18.
Which shows the experimental probability that a student chose juice?

A. 4/11

B. 4/15

C. 20%

D. 40%

Answers

Hai!

Your answer is B.

Brainliest Maybe?

The answer is B. 4/15

Hurry I’m being timed!!!

Answers

two plus y -2x - 6 to the tenth power

‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ​

Answers

Answer:

5.5 pints is the answer to this

Answer:

4.579708

Step-by-step explanation:

I need help please
1) The number of fish in a pond can be modeled by the function f(t)=1200(0.85)^t, where t is the number of years. Which of the following is true?

A. The fish population increases by 85% each year.

B. The fish population decreases by 85% each year.

C. The fish population decreases by 15% each year.

D. The fish population increases by 15% each year.

Answers

Answer

B

Explanation
B is the right answer

Can someone plz help me with this one problem plzzzzz!!!!

Answers

Si your answer is si

Dustin had a hit to bat ratio of 3:8. Adrian had a hit to bat ratio of 4:10. Who has a better hits to bat ratio?
Adrian
Dustin
Their ratios are equivalent

Answers

Adrian because his is 16:40 and Dustin is 15:40

Answer:

hh by uvdft uhh xxx sdhngydcvgtsg

What is 1/3 x 3? Please :>

Answers

Answer:

1

Step-by-step explanation:

It costs 3.75 for 25 fl. Oz. Of detergent or 12.60 for 90 fl. Oz. Which is the better buy?

Answers

3.75 for 25 because its 6.66666 instead of 7.14
12.60 for 90fl I think

Which net represents the figure?

Answers

Answer:

it's the first one with the 3 triangles it closes to make a pyramid

It’s the first answer because the four triangles around the edges of the bottom would meet together to form a pyramid. Please Brainliest.

A local bookstore is selling each of their books at the same price. Jamal bought 5 books for a total of $64.95.

Which of the following equations represents the cost, C, in dollars for b books?

A. C=5b


B. C=b5


C. C=12.99b


D. C=b12.99

Answers

C ........................

What does it mean in Math when we say that an equation is balanced?

Answers

A balanced equation in math means both sides on the equal side are both balanced meaning they’re both the same

The function C gives the percentage of homes using only cell phone service x years after 2004. Explain the meaning of each statement.

1.C(10)+35
2.C(x)=10
3.How is C(10 different from C(x)=10?

Answers

Answer:

hi how are you

Step-by-step explanation:

the percentage of homes using only cell phone service 10 years after 2004, that is, after 2014.

Help me quick, its MATH!!
please don't type in trash, like o

Answers

Answer

B

Step-by-step explanation:

Answer:

The amount of questions correct is the independent variable

Step-by-step explanation:

The score is changed by the number correct, so it is not independent, but the score is changed by the number of correct questions.

If x = 12 units, y = 4 units, and h = 8 units, find the area of the rhombus shown above using decomposition.
A.
128 square units
B.
16 square units
C.
32 square units
D.
96 square units

Answers

Answer:

i cant see you file

Step-by-step explanation:

Answer:

D. 96 square units

Step-by-step explanation:

This is the correct answer, many have gotten it wrong in the past

but it's 96 units squared.

Time in hours
4
Number of miles
96
Unit rate (miles per hour)

12 || 12



3. Orlando is traveling at 12 miles per hour.

a. **How many miles will he travel in 4 hours? Enter your
answer in the table.








b. *How long will it take him to travel 96 miles? Enter your
answer in the table.


NO WORK = NO CREDIT = REPORT

Answers

A: 48 miles
12mph x 4hours = 48miles

B: 8 hours
96 mi. / 12 mph = 8 hr
If Orlando is going 12 miles per hour then in four hours they will be going 60 miles per hour because 12 times 4 is 60

plz helppp i need t have answerrr

Answers

Answer:

1.2

Step-by-step explanation:

HELP, WILL GIVE BRAINLIST!!!!!

Answers

Answer:

w, number of words types is dependent variable and t, ti.es in minute is independent

Answer:

Time is dependent

Number of words is independet

Step-by-step explanation:

I need help please!!!! ​

Answers

Answer:

A

Step-by-step explanation:

:)

1. 3x = 42
2. x ➗ 5 = 24


3. x ➗ 2.1 = 4.4
4. 5x = 80



5. 88 = x ➗ 2.2
6. 1.4x = 15.4

7. 7x = 54.6
8. 144 = x ➗ 3.1


9. x ➗ 7.5 = 3.5
10. 2.64 = 0.4x


11. 13x = 117
12. x ➗ 3 = 0.67

Answers

Answer:

Step-by-step explanation:

yes all this answer are right

Answer:

I DON"T UNDERSTAND

Step-by-step explanation:

hmu so we cn tlk if u want

Which of the following equations was used to graph the line shown?

A line on a coordinate grid that passes through the points negative 4 comma negative 2, zero comma zero, and 6 comma 3.
A. y = 2x B. y = x ÷ 2 C. y = x + 2 D. y = x – 2

Answers

The answer is B !!!!!
B is the answer
hope this helped

Write each Quadratic function in standard form. The 2 picture is my notes to help with the answer.

Answers

Answer:

33) 4x² + 8x + 1

35) -2x² + 36x - 147

         

Step-by-step explanation:

#33: f(x) = 4(x+1) ² - 3

f(x) = 4(x+1) ² - 3

First Step: Multiply (x+1) (x+1)

(x + 1)² or (x+1)(x+1) is a one real double.

A one real double means that there is only one real solution

(x + 1) (x + 1) = x² + 2x + 1

Second Step: Multiply x² + 2x by 4

4(x² + 2x + 1) = 4x² + 8x + 4

Final Step: Put -3 in the Quadratic Function and do -3 + 4 to get your constant

4x² + 8x - 3 + 4

= 4x² + 8x + 1

#35: f(x) = -2(x - 9) ² + 15

First Step: Multiply (x - 9) (x - 9)

Remember, (x - 9) ² or (x - 9) · (x - 9) is a one real double, meaning that there is only one real solution.

(x - 9) (x - 9) = x² - 18x + 81

Second Step: Multiply by -2

-2 (x² - 18x + 81) = -2x² + 36x - 162

Final Step: Add the constant by 15 in the equation. (Hint: the constant is -162)

-2x² + 36x - 162 + 15

= -2x² + 36x - 147

This is how you convert the function into standard form. Hope this helps.

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