Mathematics Middle School

estimate the area of a circle with a radius of 27 meters

Answers

Answer 1

2289.06 meters squared

Answer 2

2289.06 meters squared

Related Questions

Alvin’s age is two times Elgas age. The sum of their ages is 18. What is Elgas age?

Answers

Hey there! :D

18=2x+x

x= Elga's age.

18=3x

Divide both sides by 3.

x=6

Elga is 6 years old.

I hope this helps!
~kaikers

18 times 18 eaqwalswhat bro that your awnser hope i help

if you roll a fair six-sided number cube twice. what is the probability that the first roll is a 5 and the second is a 6?

Answers

1/6*1/6=1/36
answer is 1/36

If x = 12 cm, y = 8 cm, z = 10 cm, and w = 3 cm, what is the surface area of the geometric shape formed by this net?
A. 288 cm2
B. 144 cm2
C. 192 cm2
D. 160 cm2

Here's the shape: https://media.studyisland.com/pics/127804pic7.png

Answers

Solve for the area of the figures.
3 rectangles and 2 triangles (or 4 right triangles).

View attachment

btw I think you gave the wrong measurements probs cuz it doesn't come up with any of the options for the answer but I know it is 186 cm^2 for sure...

ANSWER ASAP WILL GIVE BRAINLIEST Boris solves the system of equations using the linear combination method.

3x+4y=−87x−3y=6
Which steps would allow him to eliminate the y terms in the system of equations?

Multiply 3x+4y=−8 by 3. Multiply 7x−3y=6 by 4. Add the resulting equations together.

Multiply 3x+4y=−8 by 7. Multiply 7x−3y=6 by −3 . Add the resulting equations together.

Multiply 3x+4y=−8 by 4. Multiply 7x−3y=6 by 3. Add the resulting equations together.

Multiply 3x+4y=−8 by −3 . Multiply 7x−3y=6 by 7. Add the resulting equations together.

Answers

The answer is А

Multiply 3x+4y=−8 by 3. Multiply 7x−3y=6 by 4:
{3x + 4y = -8 |*3
{7x - 3y = 6 |*4

{9x + 12y = -24
{28x - 12y = 24

Add the resulting equations together:
37х = 0

Answer:

a is the answer

Step-by-step explanation:

i did the test

Which number is IRRATIONAL? A) 64 B)81 C) 96 D) 144

Answers

96 because it is the only one that cant be rooted evenly

help with this one plzzz?

Answers

(8x+4)+(18-8x)=8x+4+18-8x=0+22=22
the choice is D

Cylinders A and B are congruent. Cylinder A has a volume of 27π cm3 and a height of 3 cm. What is the area of the base of cylinder B?

Answers

To find this answer you would use the formula for finding the volume of a cylinder. Because both of these cylinders are congruent, the area of the base for cylinder A I would also be the same area for cylinder B. V=pi x r^2 x h. When we substitute in what we know this is the new equation: 27 x pi = pi x r^2 x 3. Divide both sides by three and pi. This gives us 9 = r^2. Take the square roots of both sides to find the radius. The answer would be 3. Now use the formula for area of a circle to find the area of the base of cylinder B. A= pi x r^2. So the area would be 9 x pi.

Answer:

9pi

Step-by-step explanation:

50 POINTS AND BRAINLIEST! :) :) :)

Write an equation that you can use to solve for x.

Enter your answer in the box.

Answers

Hey there! :D

So, the angle measuring 100 degrees is supplementary to the angle that is adjacent to it, next to the one that is 60 degrees.

180-100= 80

It is 80 degrees.

80+60+x= 180

140+x= 180

Subtract 140 on both sides.

x=40

40 is the answer.

I hope this helps!
~kaikers

80+60=140
180-140=40
X=40
This would help

Determine if the number is written in scientific notation. If not, explain. 4.8 × 1007

Answers

it is not because you do not have 10 to the something.

HELP Me A marker is randomly selected from a drawer that contains 20 green, 44 orange, and 30 blue markers. Which statement is true?

P(orange)≈0.53

P(green)≈0.21

P(blue)≈0.41
Thank you

Answers

To find the odds first find the total 20+44+30=94 and find the odds so there are 44 orange markers that is 44/94
44/94 as a decimal is .468 so the first one isn't true
green is 20/94 as a decimal is 0.21
so the second option or the green one is true

Answer:

P(green)=0.21

Step-by-step explanation:

I got it right on a test :)

Please consider brainliest (I never got brainliest before)

Figure ABCD is a parallelogram. which of the following must be true.

Answers

I believe it is the first choice

In a parallelogram opposite sides are parallel to each other.

So side AD is parallel to side BC

From the above four options as we can see in option C we have AD║ BC.

Option C is the correct answer.

Find an angle at home. Measure the angle. Record the measure. Classify the angle.

Answers

find a box and say the angle is 90° and u should be able to figure the other stuff out.

Answer:

a table leg it is 90 degreges from the floor it is a right angle.

Step-by-step explanation:

Round to the nearest ten thousand: 68,231

A. 69,000

B. 70,000

C. 68,000

D. 60,000

Answers

The number 68,231 is closer to 70,000 than it is to 60,000

So the answer is choice B

Another way to see this answer is to drop everything after the 6 (which is what is in the ten-thousands digit place) and replace all of those dropped digits with 0s. We add 1 to the digit we didn't get rid of because the 8 after the 6 is larger than 5

Hello there!

Your answer would be (68,00) because when rounding to the nearest 10th, we basically look at the tenth place.

6(8).

Number 8 is the 10th place, and it is over 5 to pass to line.

It goes right back up.
Your answer would be the (option b)

A. 69,000
B. 70,000
C. 68,000
D. 60,000

I hope this helps you!

Marlene's taxable income is $95,000. Use this tax schedule to calculate the total amount she owes in taxes. $12,888.75

Answers

Marlene owes a total of $20,710.75 in taxes.

If we are using the same tax schedule then $95,000 belongs to this bracket:
Over - But not over - of the excess over -
$77,100 but not over $160,850.. 15,698.75 plus 28% 77,100

Get the 28% of the difference between $95,000 and $77,100:
$95,000 - $77,100 = $17,900
$17,900 * .28 = $5,012

$15,698.75 + $5,012 = $20,710.75

Which of the following best describes the expression 5(x + 2)?

The sum of constant factors 5 and x + 2
The product of constant factors 5 and x + 2
The sum of a constant factor 5 and a 2-term factor x + 2
The product of a constant factor 5 and a 2-term factor x + 2

Answers

the expression would be "the sum of constant factors 5 and x + 2
hope this helps,
QueenofLovers123

Answer:

5 is a constant. (it has no variables)

x + 2 is not a constant. It does, however, have two terms, x and 2.

(terms are seperated by addition/subtraction)

This rules out a and b.

As for c... 5(x+2) implies multiplication, which would be a product, not a sum.

d. The product of a constant factor 5 and a 2-term factor x+2

Step-by-step explanation:

at the park, 4/7 of the children are boys. if there are 8 boys at the park, how many are girls?

Answers

There are 4/7 boys, so there are 3/7 girls.

Let the total number of children be x.

4/7x = 8
1/7x = 8 ÷ 4
1/7x = 2
3/7x = 2 x 3
3/7x = 6

There are 6 girls.

6 because 4/7 boys means a ratio of 4:3, so twice 4 to make 8 means twice 3 to make 6.

a cylindrical container can hold about 1,256 cubic inches of water.the diameter of the cylinder is 10 inches long.approximate the height of the cylinder to the nearest inch.use 3.14 to approximate the value for pi
A.16
B.80
C.40
D.4

Answers

Answer: A. 16 inches

Step-by-step explanation:

The volume of the cylinder is given by :-

[tex]\text{Volume}=\pi r^2h[/tex]

Given: Diameter of cylinder = 10 inches

Thus, radius of cylinder = [tex]\frac{10}{2}=5\ inches[/tex]

Let h be the height of the cylindrical container.

Then , The volume of the cylindrical container is given by :-

[tex]1256=\pi (5)^2h\\\\\Rightarrow\ h=\frac{1256}{5^2\pi}\\\\\Rightarrow\ h=\frac{1256}{25\times3.14}\\\\\Rightarrow\ h=16}[/tex]

Hence, the height of the cylindrical container = 16 inches.

Answer:

16 in.

Step-by-step explanation:

A cylindrical rain barrel with a diameter of 2.5 feet and a height of 3.5 feet is filled to a height of 1.5 feet. How many more gallons of water can the barrel hold? Round your answer to the nearest whole number. (1 ft3≈7.5 gal)

Answers

To answer this question you will need to find the total volume the rain barrel can hold. Then find the volume of water that it is currently holding.

Subtract these two amounts to find the total amount of water or can still hold.

Then convert this amount to gallons.

1. V = pi x r^2 x h
3.14 x 1.25^2 x 3.5
V = 17.17 cubic feet

2. Same formula
3.14 x 1.25^2 x 1.5
V = 7.36 cubic feet

3. 17.17 - 7.36 = 9.81 cubic feet

4. 9.81 x 7.5 = 73.575 gallons or approximately 74 gallons.

Paul has a board that is 1,200 cm long. Which of the following measures is equivalent to 1,200 cm?

a. 0.12 km
b. 12 m
c. 120 m
d. 120,000 mm

Answers

1 m =100cm
Therefore
12m = 1200 cm
answer is B

Answer:

The correct answer is B.

Step-by-step explanation:

Its B because 1m = 100m

12m = 1,200

How do you find the value for x in the problem?

Answers

Make use of the fact that side lengths in similar triangles are proportional.
.. 30/18 = (20 +x)/20
.. 20*(30/18) -20 = x . . . . multiply by 20, subtract 20
.. 33 1/3 -20 = x . . . . . . . . evaluate the product
.. 13 1/3 = x

Write a linear equation to represent her distance at any time

Answers

Kayleens average speed is 70 miles per hour.

Her average speed was 70 MPH because 208 miles Divided by 4 because the time was 4:00 equals 70 so the answer is 70 mph

PLZ GIVE ME BRANLIEST

a 12 foot tall building casts on 8 foot long long shadow. how long of a shadow will a 5 foot tall women have

Answers

This is just a basic proportion. 5/8 = x/12. So the 5 foot tall women would have a 7.5 foot shadow.

Final answer:

Using the concept of similar triangles and the given ratio of a building's height to its shadow, it was calculated that a 5-foot tall woman would cast a shadow that is approximately 3.33 feet long.

Explanation:

The question deals with similar triangles where the ratio of the height of an object to the length of its shadow is constant if the sun's rays are considered to be parallel. Given that a 12-foot tall building casts an 8-foot long shadow, we can use this ratio to determine the length of the shadow that a 5-foot tall woman will cast.

First, find the ratio of the building's height to its shadow's length:

Height of the building / Length of shadow = 12 feet / 8 feet = 1.5

Since the ratio should remain the same, we can set up a proportion for the woman:

Height of the woman / Length of her shadow = 5 feet / x (the unknown length of the shadow)

Now solve for 'x' using cross multiplication:

12 / 8 = 5 / x12*x = 5*8x = (5*8) / 12x = 40 / 12x = 3.33 feet (approximately)

Therefore, the shadow cast by the 5-foot tall woman will be approximately 3.33 feet long.

You had $50. You spent 10% of the money on clothes, 20% on games, and the rest on books. How much was spent inborn books?

Answers

Answer:

$35 was spent on books

Step-by-step explanation:

We must figure out the percent out of $50 that the books are worth

This is 70%

Now we need to figure out how much 10% is out of $50

50 divided by 10

10 percent of the books is 5 dollars

Now to find 20% we do 5+5=10 because it is just x2 of 10%

So we have spent 15 dollars on clothes and games

So now all we must do is 50-15=35

This is how we get our answer!

Pls mark me brainliest! Hope this helps :D

After spending 10% on clothes 20% on games I spent $35 on books.

What is the percentage?

A percentage is a value per hundredth. Percentages can be converted into decimals and fractions by dividing the percentage value by a hundred.

Given, You had $50. You spent 10% of the money on clothes, 20% on games, and the rest on books.

Therefore, The expression that represents the context is,

$(50 - (10/100)×50 - (20/100)×50).

= $(50 - 5 - 10).

= $35.

SO, $35 she spent on books.

learn more about percentages here :

https://brainly.com/question/24159063

#SPJ2

Cost for bowling at Blue Oaks bowling alley are $2.50 for shoes and $4.25 for each game bowled. Austin bowled 5 games. what was his total cost to bowl?
SOLVE FOR X AND PLEASE SHOW WORK!!!!

Answers

2.5 + 4.25x

2.5 + 4.25(5) = 2.5 + 21.25
= 23.75

Hope this help

helllllllllllp meeeeeee

Answers

The constant of proportionality in terms of the cost per text is the coefficient of [tex]t[/tex] in the equation [tex]b=0.25t[/tex]. Since the coefficient of [tex]t[/tex] is 0.25, the constant of proportionality in terms of the cost per text is 0.25.
Proportionality constants are usually expressed as fractions, so lets convert 0.25 to a fraction. To do that we are going to add the denominator 1 to our decimal, and then we will multiply both numerator and denominator by ten for every number after the decimal point:
[tex] \frac{0.25}{1} [/tex]
[tex] \frac{0.25}{1} . \frac{100}{100} = \frac{75}{100} [/tex]
Finally, we can simplify our fraction:
[tex] \frac{25}{100} = \frac{1}{4} [/tex]

We can conclude that the constant of proportionality in text of the cost per text is 1/4

HELP ASAP PLEASEEEE WILL GIVE BRAINLIEST!

Answers

_
ab i think that is the answer

I'm pretty sure your answer is AB.

The relation {(-1, 4), (2, 7), (3, 7)} is a function. True False

Answers

Tryour answear is true

Answer:

True

Step-by-step explanation:

I did the quiz and got 100%

Plz help with this! Thx for the help

Answers

if my math is correct each gallon comes up to about 34 miles travelled, for 544 it would be 16 gallons and for 1 it would be 34, so if you keep adding to this on 7 gallons it will be 238 on 10 it would be 340

102 % 3 is 34 so 1 is 34 and you just tunes the gallons by 34 for the answer so ex(7X34=238) I hope this explanation helps you!

can their be smaller integer than 0.5

Answers

Yes, but only if the integer is negative because all integers are whole numbers.

Kylie is on a swing the swing moves back and forth every 5 seconds. About how many minutes would it take Kylie to go back and forth one hundred times? Can you help me figure the minutes out in a fraction?

Answers

31/2 is what i got....its like 87% right

The fraction of the total time in minutes is therefore 8 1/3 minutes, which is equal to 25/3 minutes when expressed as an improper fraction.

To determine the amount of time it would take for Kylie to swing back and forth 100 times, we must first understand that the period of the swing, the time it takes to complete one full cycle back and forth, is 5 seconds. Therefore, we can calculate the total time for 100 swings by multiplying the period by the number of swings:

Total time (seconds) = Period (seconds per swing) * Number of swings

Total time (seconds) = 5 seconds/swing * 100 swings

Total time (seconds) = 500 seconds

To convert seconds into minutes, we divide by the number of seconds in a minute, which is 60:

Total time (minutes) = Total time (seconds) / 60 seconds/minute

Total time (minutes) = 500 seconds / 60 seconds/minute

Total time (minutes) = 50/6 or approximately 8 minutes and 20 seconds.

The fraction of the total time in minutes is therefore 8 1/3 minutes, which is equal to 25/3 minutes when expressed as an improper fraction.

Other Questions

Newspaper headlines, such as "two convicts evade noose, jury hung," may strike us as funny. from the perspective of language, this is because the phrase or headline __________. A yoga membership costs $16 and an additional $7 per class. Write a linear equation modeling the cost of a yoga membership. y = 16x + 7 y = 7x + 16 y = 23x + 7 y = 23x + 16, In what ways are animals treated differently in sustainable agriculutre 5 3/4 in a improper fraction? A .5 kg toy train car moving forward at 3 m/s collides with and sticks to a .8 kg toy car that is traveling at 2 m/s what is the final velocity of the two cars round to the nearest 10th Elizabethan drama relied heavily on costuming. True False What is the number 4 in SiCl4? Where are drainage pads most often needed during post mortem care? What type of map would you use to find the elevation of an area? climate map physical map political map topographic map Suppose the line of best fit is being found for some data points that have an r-value of 0.876. If the standard deviation of the x-coordinates is 5.559, and the standard deviation of the y-coordinates is 7.163, what is the slope of the line to three decimal places? Calculate the force exerted on a rocket when the propelling gases are being expelled at a rate of 1300 kg/s with a speed of 4.5 104 m/s. Which of the following people has found the right career path by combining his or her skills and interests?A.Tyra does very well in math and enjoys tutoring her younger cousins in this subject. She's started taking ballet lessons because she wants to pursue a career as a ballet dancer. B.Angela's favorite class is U.S. government. She likes to keep up on current events. She also loves to sing in the shower. She wants to be a singer. C.Stephen excels in biology and loves reading books about genetics and evolution. He's learning to play guitar because he wants to be a professional musician. D.Rodrigo does well in math. In his free time he takes computers apart and puts them back together. He also enjoys playing baseball. He wants to be a computer technician. The table below represents the displacement of a bird from its nest as a function of time: time (hours) x displacement from nest (miles) y 0 12 1 20 2 28 3 36 4 44 parta.what is the y-intercept of the function, and what does this tell you about the bird? partb.calculate the average rate of change of the function represented by the table between x = 1 to x = 3 hours, and tell what the average rate represents. partc.what would be the domain of the function if the bird continued to fly at this rate until it traveled 172 miles from the nest? Analogy: ______ is to voluntary as ______ is to involuntary. If the apparent magnitude of a star increases,the star get brighter, true or false? Which is a function of the urethra?to produce sperm and semento initiate puberty and reproductive maturityto carry sperm and urine out of the bodyto release testosterone and other hormones Write a net ionic equation to show that acetylsalicylic acid (aspirin), hc9h7o4, behaves as a brnsted-lowry acid in water. What is the slope of the line that contains the points (4,-1) and (-1,4)? There are approximately 2.2 million births in a country each year. Find the births per minute. Which statement describes an impact of the collapse of the Western Roman Empire on Europe?Europe's economy improved significantly as new roads and infrastructure were developed.Former Roman lands were split up and claimed by Germanic kingdoms.There was a definite decline in Christianity, its followers, and its spread across lands.Trade increased in the West, resulting in an end to the recession taking place at that time.