Mathematics Middle School

Help with this ill give brainliest

Answers

Answer 1

Answer:

1. 678.6

2. 1131

3. 490.1

4. 1809.6

Step-by-step explanation:

A=2πrh+2πr2

Answer 2

Answer:

1. SA = 216π cm² ≈ 678.24cm²

2. SA = 360π ft²≈ 1130.40ft²

3. SA = 156π yd² ≈ 489.84yd²

4. SA = 576π m² ≈ 1808.64 m²

Step-by-step explanation:

SA of a cylinder = 2πrh + 2πr²

1. r = diameter ÷ 2

r = 12/2 = 6

SA = 2π(6)(12) + 2π(6)²

SA = 144π + 72π

SA = 216π ≈ 678.24

2. r = 19/2 = 9

SA = 2π(9)(11) + 2π(9)²

SA = 198π + 162π

SA = 360π ≈ 1130.40

3. SA = 2π(6)(7) + 2π(6)²

SA = 84π + 72π

SA = 156π ≈ 489.84

4. r = 24/2 = 12

SA = 2π(12)(12) + 2π(12)²

SA = 288π + 288π

SA = 576π ≈ 1808.64

Related Questions

PLEASE HELP ASAP!!! BRAINLIEST TO RIGHT ANSWER!!!
The picture below shows a pole and its shadow:

A pole is shown with a right triangle side. The right triangle has hypotenuse 365 cm and base 27 cm.
What is the height of the pole? (1 point)

Select one:
a. 196 centimeters
b. 244 centimeters
c. 338 centimeters
d. 364 centimeters

Answers

Answer: 220cm

Step-by-step explanation:

Let's make the base of this triangle 'a' which we know is 21cm

While 'a' and 'b' in Pythagorean are interchangeable, 'c' will ALWAYS be the hypotenuse.

That being said, we also know that 'c' is 221cm

Once we plug in the numbers we have been given, our formula looks like this: 21 squared + b squared = 221 squared

Now it's time to square 'a' and 'c'

Our equation is now simplified to: 441 + b squared = 48841

Now, we need to isolate 'b squared' to find it's value. We do this by subtracting 441 from both sides (it needs to be from both sides to keep the equation even)

With 441 subtracted from both sides, our equation is now: b squared = 48400

Our last step is to find the square root of both sides of the equation, because 'b' is the value of the height of the triangle, but right now we have 'b squared' so to turn that into 'b' we have to find the square root of 'b squared', which would give us 'b' (square roots and squares cancel each other out).

We know that whatever we do to one side must also be done to the other, so since we just found the square root of 'b squared', now we need to find the square root of 48400, which is 220.

That would make our equation: b = 220

b = height = 220

Answer:

D.) 364 centimeters

Step-by-step explanation:

365 Δ 27

364

27 + 364 = 391

(you have to add the smaller numbers together so that they are bigger than the hypotenuse.)

What is the distance between (-2, -3) and (-4, 3)? on a scatter plot

Answers

-3-3 = -6 ^ 2 = 36
-2- -4 = 2 ^ 2 = 4
36 + 4 = 40
square root of 40 = 2 -/10 ( 2 and square root 10)

Answer:

Look at the image.

Step-by-step explanation:

Hi

Can you share a strategy for error analysis? Of multiplying.

Answers

Yes ! Because it’s that because it’s it

Not sure if this is right, but your teacher could give you a multiplication problem and she solves it. The twist: She makes an error within the work she did to solve it & therefore got the wrong answer. It’s now your turn to figure out where the error was and how to fix it to get the correct answer.

please help will mark brainliest. don't answer for points.

Answers

Answer:

Step-by-step explanation:

Other answers arnt correct and answer I is

Answer:

Step-by-step explanation:

Its pretty self explanatory also If this helped you please rate this comment, give it a like, and maybe mark it as branliest!

13 points!!! I need help on these questions please!

Answers

this is for the “what’s the value..”

I got 69

3•5^2 - 2•5 +4
3•25 -2•5 + 4
75 - 10+4
65+ 4
69

I’m not 100% sure but I think the one about “one fifth of a number” might be the first answer choice 1/5x.

X+5, 69, 8+(x-1).............

Pls help me! Answer all 5 questions and will get brainliest!!!!

Answers

Answer:

1)B

2)C

3)B

4)A

5)C

Step-by-step explanation:

BrainLiest please

here is what i got
29: c
28.a
25.d
30.a

Please help me please please

Answers

Answer:

I believe for question 3 it is the first answer

Step-by-step explanation:

I want to give others a chance to earn points as well

If recycling 2,500 pounds of paper saves 20 trees, how many trees are saved when 4,000 pounds of paper are recycled?

Answers

Answer:

This is a ratio question. Set 16/2000 = x/5000 and solve for x. = 40 trees

Step-by-step explanation:

15 EASY POINTS

plz help im so lost...

Answers

Answer:

i think 20% and 15% degress

Step-by-step explanation:

If the m∠A = 110 degrees what is m∠A?

m∠A=

Answers

Answer:

if its suplementary its 70

Step-by-step explanation:

The calculated measure of the angle A is 110 degrees

Calculating the measure of the angle A

From the question, we have the following parameters that can be used in our computation:

m∠A = 110 degrees

The above implies that the measure of the angle A is 110 degrees

Since there are no other information, we can conclude that

The measure of the angle A is 110 degrees

Answers

Answer: it is b because of the x axis

Step-it is by-step explanation:

Help and show all work please

Answers

Answer:

1-3

2-8.9

3-6.3

4-26

5-7.8

6-17

7-10

8-32

9-7.9

10-13.2

11- is a right triangle

12- is not a right triangle

13- is a right triangle

14- is not a right triangle

15- is a right triangle

16- is not a right triangle

Step-by-step explanation:

I will do the rest it will just take me some time. I will also give you

step by step at the end.

Answer:

1- 3

2- 8.9

3- 6.3

4- 26

5- 7.8

6- 17

7- 10

8- 32

9- 7.9

10- 13.2

11- 289 right triangle because 289 = 289

12- 81 not right triangle

13- 169 right triangle

14- 156 not right triangle

15- 676 right triangle

16- 9 not right triangle

Step-by-step explanation:

a2 + b2 = c2

example:

9x9 + 10x10 = c2

81 + 100 = 181

the square root of 181 = c2

c2 =

a2 + b2 = c2

a2 = a squared

b2 = b squared

squared means to multiply it by its self

do this for everyone

solve this and get brainly

Answers

Answer:

The slope is positive, because the line is going up

The equations is.....y = 2/3x - 2

To find slope we can make a table

x y

6 2

3 0

From 2 to 0, we subtract 2 ( y section)

From 6 to 3, we subtract 3 (x section)

Now we do y/x

so...y/x = -2/-3 = 2/3 (since 2 negatives equal a positive)

Slope = 2/3

And for the y-intercept, I used the graph to help me out, and to find it, you need to see where the line intersects the y-axis which is at -2.

Hope this helped!

Have a supercalifragilisticexpialidocious day!

The slope is 2/3

ur welcome i am super smart

HELP WILL GRIVE BRAIN 100 POINTS PLEASE ANSWER ALL 5

Answers

Answer:

1. The sum of 4 and x is 7, and to isolate the variable, you move the 4 to the other side and the equation will change into x=7-4, giving us x = 3

2. To solve this inequality, you must isolate the variable x by moving -9 to the other side. To do this, you have to divide 27 by -9, and this causes the direction of the inequality sign to change. After you divide, the inequality changes to this: x<-3

3. since there are no negative numbers involved in this inequality, you divide 3 by 1/4 (or multiply it by 4) to isolate x. this gives us x <= -12

4. To solve this algebraic equation, you must isolate the variable 3x. To do this, you must move -9 to the other side of the equation by adding 9 to the 6. this gives us 3x=15 and x = 5

5. To put x by itself, you subtract 1 by 4, giving you x<-3

I am not sure sorry,Why? Did you search up how to take a screen shot lol

Determine the distance between -1 and -7

Answers

6 because you count from -1 to -7 and it can’t be a negative number because it’s impossible to count down to find the distance which means it always has to be positive to find the distance. in conclusion the answer is 6. you can also do -1- -7 which changes the double subtraction to addition and takes the negative away from -7 so -1+7=6!

The answer is 6 determine just means to identify

[tex]Put the following values in order from least to greatest\\2^{0}, 2^{-2}, (-2)^{2}, -2^{2}[/tex]

Answers

Answer:

4321

Step-by-step explanation:

1 is 1, 2 is .25, 3 is -2, 4 is -4

Answer:

(-2)², -2², 2-², 2°

Step-by-step explanation:

How many applications will your mother actually use on her new cell phone? Solve the equation you wrote in part b to find the unknown variable.

Answers

Answer:the answer should be 24

Step-by-step explanation:

good luck

What number should be subtracted from both sides of the following equation to solve for x?
x + 27 = 30

Answers

Answer:

x= 3

Step-by-step explanation:

Answer:

Step-by-step explanation:

to solve for x it would look like this

x + 27 = 30

x = 30 - 27

x = 3

Babaganoush’s electricity supply company charges him a fixed quarterly sum plus a rate per unit for electricity used. In the most expensive quarter last year (January to March), he used 2,400 units and his bill was $320. In the least expensive quarter (July to September), he used 800 units and his bill was $144. He is now adding extra insulation to his home which is expected to reduce his overall electricity consumption by 25%.
What can he expect his January to March bill to be next year (if there are no increases in overall tariffs)?

Answers

Answer:

14,848.25

Step-by-step explanation:

2400+800=3200

320+144=464

25 3200 464

---- ------ ----= 14,848.25

100 x x

25x3200x464 divided by 100

Hope this helped and have a great day!

answer options
2

7

8

3

Answers

Umm I think it would be 8 because that’s a 90 degree angle and if 40 degrees is there you need 50 more 6 times 8 is 48 plus 2 is 50

answer is 8

BECAUSE

90 - 40 = 50 (6x = 6 x a number) +2 6x8+2 6x8=48+2 =50

Help me and please do number 4 and be more specific please Number 5 and 6 also.

Answers

I can’t see anything

Answer:

where is questions wher where where

Wilbur pays 5% sales tax on a sweater that costs 45 dollars. How much does the sales tax add to the purchase price?

Answers

Answer:

Step-by-step explanation:

6777

Please help me. Please

Answers

Answer:

im pretty sure that the answer would be B

Step-by-step explanation:

Answer:

it would be B bc u will replace 2 with 6

Step-by-step explanation:

hope this helps

What's The Answer? Good Luck!

Answers

I guess b it should be

B......is the answer......

the product of a number and -4 is 80
*please help ;-;*

Answers

Answer:

its -4 x -20 and that equals 80

Step-by-step explanation:

it’s 4 x 20 = 80 .............

Raj gave his mother a bouquet of 12 pink and white roses. There were 4 pink roses in the bouquet. Which ratio
represents the number of white roses to the total number of roses in the bouquet?
1/3
1/2
2/3
3/4

Answers

Sorry I was wrong, I didn’t mean to get it wrong.

2/3

12 flowers, 4 of them are pink, 12-4 is 8, so that is 8 white flowers. When you simplify 8/12, that would be 2/3.

Garry is studying a square pyramid and wants to draw a net of the figure to help determine its surface area. Which net represents a square pyramid?
A net with a triangular base and 3 square sides.
A net with a square base, 2 triangular sides, and 2 square sides.
A net with a square base and 4 triangular sides.
A net with a square base, 2 triangular sides, and 4 square sides.

Answers

Answer:

A net with a square base and 4 triangular side

Step-by-step explanation:

Answer: the answer is C

Step-by-step explanation:

Ahhh help me pleaseeee its overdue and needs to be turned in today!!!

Answers

Step-by-step explanation:

4.25× 1.59 = 6.7575 = $7

plz mark my answer as brainlist plzzzz.

hope this will be helpful to you.

$7 will be the answer hope this helped

Does anyone know the surface area of this figure????

Answers

Answer:

Step-by-step explanation:

10*10

6*6

8*8

then add them to get your answer

i think-

if it were perimeter u add 10+10+6+6+8+8 i think :I

if this helps give brainliest pls-

if wrong ,ignore this part

4(10*6)+3(8*6)
so A=384

Two linear functions are represented in different formats.
Function 1:

x y
0 −2
2 0
3 1
5 3
Function 2:

Graph of a line passing through the point begin ordered pair negative 2 comma 0 end ordered pair and the point begin ordered pair 0 comma 4 end ordered pair.

Which statements are true?

Select each correct answer.

Function 1 has a greater rate of change than function 2.

Function 2 has a greater rate of change than function 1.

Function 1 has a greater y-intercept than function 2.

Function 2 has a greater y-intercept than function 1.

Answers

Answer:

Funcation 2 and Fauncation 1

Step-by-step explanation:

Function 2 has a greater rate of change than function 1. Therefore, options B and D are the correct answers.

What is the equation of a line?

The general equation of a straight line is y=mx+c, where m is the gradient, and y = c is the value where the line cuts the y-axis. This number c is called the intercept on the y-axis.

Function 1:

With coordinates (0, -2) and (2, 0)

Now, m=(0+2)/(2-0)

m=1

Substitute m=1 and (x, y)=(0, -2) in y=mx+c, we get

-2=c

Substitute m=1 and c=-2 in y=mx+c, we get

y=x-2

Function 2:

With coordinates (-2, 0) and (0, 4)

Here, m=(4-0)/(0+2)

m=2

Substitute m=2 and (x, y)=(-2, 0) in y=mx+c, we get

0=-4+c

c=4

Substitute m=2 and c=4 in y=mx+c, we get

y=2x+4

Therefore, options B and D are the correct answers.

To learn more about the the equation of a line visit:

https://brainly.com/question/2564656.

#SPJ2

Other Questions

A county in the shape of a rectangle has a length of 120 miles and a width of 80 miles. The population of the county is about 300,000 people. Find the population density in people per square mile. Round your answer to the nearest whole number. ---will give brainliest hurrryyy Cambia los verbos a future tense1. El Sr. Santana ________ -va a abrir- una cuenta comn.2. Yo _______ -voy a mudarme- para este distrito.3. Mis hijos _______ -van a llenar- y ______ -a firmar- las tarjetas.4. Despus _______ -vamos a cerrar- la cuenta en el otro banco.5. Ud. _______ -va a tener- sus cheques en dos semanas.6. T no _______ -vas a poder- ganar un inters del 8%.7. Quin ________ -va a venir- con el dinero?8. No les _______ -va a convenir- tener todo el dinero parado.9. Ella ______ -va a hacer- los modelos.10. Les ______ -vamos a decir- la verdad. Based on what youve learned about forest management what is one good reason why the DNR encourages people to NOT bring firewood from place to place?Question 2 options:To lower the possibility of bring in insects from other places.So that local people selling wood can make more money.Wood doesnt burn well that isnt local.All of the above. 2 example of moral development Greg rented a truck for one day. There was a base fee of $20.99, and there was an additional charge of 71 cents for each mile driven. Greg had to pay $144.53when he returned the truck. For how many miles did he drive the truck? HELP ME PLS I WILL GIVE BRAINLYEST 1. Is this organism affecting the lives of humans? 2. How is it affecting the lives of humans? 3. What are some ways to prevent the spread of zebra mussels? Angela is repainting her kitchen. she estimates that she paints 35 feet every 1/3 hour. how many feet does she paint in 1 hour? Eli started saving money in his empty piggy bank. He inserted $1 on every Monday, $2 on every Tuesday, $3 on every Wednesday, $4 on every Thursday, $5 on every Friday, $6 on every Saturday, and $7 on every Sunday. At the end of 24 days, he opened his bank and found he had $93. On which day of the week did he start inserting money into his piggy bank? The coordinates of the vertices of triangle ABC are A(9.-10), B(-15, 0), and C(15, 10). A dilation centered at (0, 0) is perfomed on triangle ABC to produce triangle ABC. The coordinates of the vertices of triangle A'B'C' are A' (13.5, -15), B(-22.5, OJ, and C(22.5, 15). Find the scale factor. will mark brainlyst A car dealership decreased the price of a certain car by 14%. The original price was $48,200.(a) Fill in the blank to write the new price in terms of the original price.Write your answer as a decimal.New price = { x Original price(b) Use your answer in part (a) to determine the new price.New price: $0 Imagine that your family moves into a new neighborhood where you do not feel welcome & your neighbors want you to leave & are very unkind to you & your family. Do you put up with it or move out? Why? (2x-14) = (3x-6) how do I solve this Practice working with numbers that have exponents. In the blank provided, write greater than, less than, or equals.a. 102 ____________________ 103b. 1014 ____________________ 101c. 107 ____________________ 0.0000001d. 100 ____________________ 101 Which expression is equivalent to 1/3 divided by 1/6 what is the slope of (4,-6) and (4,4) What are the major types of nutrients you can get from food? Using proper communication skills is essential when speaking with others, especially during a conflict. Your best friend is mad at you and hasnt spoken to you in three days. You are not sure why and are angry about it. What strategy should you use to approach the situation? Explain the proper communication skills you would use in order to successfully resolve the conflict. Be sure to include body language, speaking, and listening skills. Explain the difference between finding the volume of this right rectangular prism with whole unit cubes and with 1/2 -unit cubes.Pls do not give me a bad answer Calculate the size of angle x.Give your answer to 1 decimal place.8 cm11 cm15 cm Spanish please help !Fill in the blanks with the reflexive verbs from the list. You will use some verbs more than once.