The diameter of a circle is 6 cm. Find its area to the nearest whole number.

Answers

Answer 1

Answer:

28.26

Step-by-step explanation:

A=3.14r^2

A=3.14(3)^2

A=3.14(9)

A=28.26

Answer 2

Answer: 28 cm

Step-by-step explanation: Area=π·r² and diameter =2r

So if we need to  find what our radius is. As shown by d=2r our radius is 1/2 our diameter. If our diameter is 6cm our radius is 3cm.

Now plug 3cm into A= 2πr²⇒ A= 2(3.14)(3²) = 28.26

Now round to the nearest whole number ⇒ 28.


Related Questions

Can anyone help me understand this please? I am mainly just confused about how to graph the first equation the second I can do

Answers

A graph of the given system of equations f(x) = 2x² - 8x + 3 and g(x) = -2x + 3 is shown in the image attached below.

The points that make both equations true is (0, 3)

What is a graph?

In Mathematics, a graph can be defined as a type of chart that is typically used to graphically represent data points or ordered pairs on both the horizontal and vertical lines of a cartesian coordinate, which are the x-coordinate and y-coordinate respectively.

What is a quadratic function?

In Mathematics, the graph of every quadratic equations (functions) is either an upward or downward parabola, which is typically a u-shaped curve. This ultimately implies that, the graph of a quadratic equation (function) would always form a parabolic curve.

Based on the graph (see attachment), we can logically deduce that the solution to the given system of equations is the point of intersection of the lines on the graph representing each, which is the ordered pair (0, 3);

f(x) = 2x² - 8x + 3

3 = 2(0)² - 8(0) + 3

3 = 3 (True).

g(x) = -2x + 3

3 = -2(0) + 3

3 = 3 (True).

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A dolphin is swimming in the ocean at −13 feet.

What is the dolphin's distance from the surface of the water in feet?

Answers

The depth of the water is 5.3 meters

What is the dolphin's distance from the surface of the water in feet?

The dolphin jumps to a height of 4.5 over the water's surface, and her companion swims 9.8 straight beneath her, according to the story.

We will take the position of the dolphin's friend and subtract it from the dolphin's position to determine the location of the dolphin's friend with respect to the water's surface.

-5.3 denotes the depth of the water.

As a result, the friend of the dolphin is located 5.3 meters below the water's surface.

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PLS HELP ME IN THIS ASAP

Answers

Answer:

0.004

Step-by-step explanation:

Hope it helps!

The number of different hands possible in the game of bridge is about 635 billion. Write this number in scientific notation

Answers

635 Billion in Scientific notation is

6.35 × 10^11

PLEASE HELP I REALY NEED THIS NOW How much simple interest is earned on an investment of $800 with a rate of 6.1% over 7 years?
A. $341.60
B. $410.87
C. $3,416.00
D. $4,108.70

Answers

The amount of simple interest is (a) $341.60

How to determine the amount of simple interest?

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

Principal, P = $800

Rate, r = 6.1 %

Time = 7 years

The simple interest on the investment is calculated as

I = PRT

Substitute the known values in the above equation, so, we have the following representation

I = 800 * 6.1% * 7

Express 6.1% as decimal

So, we have the following representation

I = 800 * 0.061 * 7

Evaluate the products

I = 341.6

Hence, the amount is (a) $341.6

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Write the equation in slope-intercept form of the line that is parallel to the graph of each equation and passes through the given point. y=1/2x+5;(4,-5)

Answers

Hey did u ever figure it out

Use the values In 3≈ 1.1 and In 47≈ 3.85 to find the approximate value of log3 47.
O log, 47
4.95
O log3 47
4.235
O log3 47
0.286
O log3 47≈ 3.5

Answers

The value of the equation log(3 47) is about 4.235.

Describe log.

The power to which a number must be increased in order to obtain another number is known as a logarithm. For instance, since ten raised to the power of two equals 100, the base ten logarithm of 100 is 2: log 100 = 2.

Given that the approximate values of log(3) and log(47) are 1.1 and 3.85, respectively,

we must determine the approximate value of log(347).

log(a × b) = log(a) × log(b)

we get ,

log(3 × 47) = log(3) × log(47)

substituting , the values of log(3) and log(47) ,

we get ,

log(3 × 47) = 1.1 × 3.85

≈ 4.235

Therefore , The approximate value of log(3 × 47) is 4.235   .

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Tritan walk 1/4 of mile in 1/10 of an hour. What i the unit rate of mile per hour?

Answers

Half a mile every hour is equal to 1/5 mile every 4/10th of an hour.

What is unitary method ?

Area is the total amount of space that an object's shape or a flat (2-D) surface occupy.

Create a square on paper by using a pencil. Two dimensions make it up. A shape's area on paper is the space it takes up.

Imagine that your square is made up of smaller unit squares.

The area of a figure is equal to the number of unit squares required to completely cover the surface area of a particular 2-D shape. Square cms, square feet, square inches, square meters, etc. are a few common units for measuring area.

To get the area of the square figures presented below, draw unit squares with 1-centimeter sides. Therefore, the shape will be measured.

According to our question-

(1/5) / (4/10) = x / 1

Cross-multiplication yielding

1/5 * 1 = 4/10 * x

How to find x?

10 / 20 = x

x = 1 / 2

Half a mile every hour is equal to 1/5 mile every 4/10th of an hour.

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Write the expression in simplest radical form. Please help !!

Answers

Answer:

[tex]7\sqrt5[/tex]

Step-by-step explanation:

245 ÷ 5 = 49

49 is a square number (7)

So you put 7 on the outside and 5 on the inside.

9x² + 31x+ 20 = ( ? ) ( ? )
2x² +7x-4 = ( ? )( ? )
2x² - 13x-5 = ( ? )( ? )

Answers

Answer: The square root of 169 is 13, so the two solutions for x are:

x = (13 + 13) / 4 = 3.25

x = (13 - 13) / 4 = -0.25

Since the quadratic expression 2x^2 - 13x - 5 equals 0 when x is either 3.25 or -0.25, the factors of this expression are (x - 3.25)(x + 0.25).

In summary, the factors of the first quadratic expression are (x + 1.056)(x + 5.937), the factors of the second expression are (x - 0.75)(x + 3.75), and the factors of the third expression are (x - 3.25)(x + 0.25).

Step-by-step explanation: To find the factors of a quadratic expression, we can use the quadratic formula. The quadratic formula states that for a quadratic expression of the form ax^2 + bx + c = 0, the solutions for x are given by the formula x = (-b ± sqrt(b^2 - 4ac)) / (2a).

In the first equation, a is 9, b is 31, and c is 20. Plugging these values into the quadratic formula, we get:

x = (-31 ± sqrt(31^2 - 4 * 9 * 20)) / (2 * 9)

This simplifies to:

x = (-31 ± sqrt(961 - 720)) / 18

This further simplifies to:

x = (-31 ± sqrt(241)) / 18

We can find the value of the square root by using a calculator or by remembering some common square roots. The square root of 241 is approximately 15.937, so the two solutions for x are:

x = (-31 + 15.937) / 18 = -1.056

x = (-31 - 15.937) / 18 = -5.937

Since the quadratic expression 9x^2 + 31x + 20 equals 0 when x is either -1.056 or -5.937, the factors of this expression are (x + 1.056)(x + 5.937).

We can use the same approach to find the factors of the other two quadratic expressions. For the second expression 2x^2 + 7x - 4, the values of a, b, and c are 2, 7, and -4, respectively. Plugging these values into the quadratic formula, we get:

x = (-7 ± sqrt(7^2 - 4 * 2 * -4)) / (2 * 2)

This simplifies to:

x = (-7 ± sqrt(49 + 32)) / 4

This further simplifies to:

x = (-7 ± sqrt(81)) / 4

The square root of 81 is 9, so the two solutions for x are:

x = (-7 + 9) / 4 = 0.75

x = (-7 - 9) / 4 = -3.75

Since the quadratic expression 2x^2 + 7x - 4 equals 0 when x is either 0.75 or -3.75, the factors of this expression are (x - 0.75)(x + 3.75).

For the third expression 2x^2 - 13x - 5, the values of a, b, and c are 2, -13, and -5, respectively. Plugging these values into the quadratic formula, we get:

x = (13 ± sqrt(13^2 - 4 * 2 * -5)) / (2 * 2)

This simplifies to:

x = (13 ± sqrt(169 + 40)) / 4

``

how did you solve it??

Answers

Answer is B) 20a -2

Step by step

Perimeter is the sum of all sides

Add

4a + 5a -7 + 7a + 2 + 4a + 3

Combine like terms

(4a + 5a + 7a + 4a) + (-7 +2 +3)

B) 20a -2 is your answer

What is the range of this table?

Answers

Answer: B

Step-by-step explanation:

Range will always be Y

Domain will always be X

I NEED HELPPP!! PLEASE ANSWER ASAP I WILL GIVE BRAINLIEST AFTER 2 PEOPL ANSWER THISSSSS

Answers

Answer:

x = 4

Step-by-step explanation:

5 x .8 = 4

Answer: the value of x is 4

Step-by-step explanation:

x=5*0.8=4

A relation contains the points (1, 2), (2, −1), (3, 0), (4, 1), and (5, −1). Which statement accurately describes this relation?

Answers

The relation represents y as a function of x as for each value of x there is a unique value of y.

What is a function?

A function y = f(x) is defined as a one to one relation between sets X and Y. The set X is called the domain while Y is called the range of f(x).

The given data is as follows,

A relation contains the points (1,2),(2,-1),(3,0),(4,1), and (5,-1).

Here x is the element of domain and y is of the range of the given relation.

Here, the values of y are distinct for different values of x.

Hence, the given relation represents y as a function of x  because for each value of x there is a single value of y.

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The total height of a building, b, and the antenna tower on top of it, t, is 425 feet. The difference in heights of the building and the antenna tower is 324 feet. The following system of equations represents the situation.
b + t = 425 b- t = 324
a. Solve the system of equations using elimination. Explain your process in your own words.
b. What is the height of the antenna tower?

Answers

Answer:

It A

Step-by-step explanation:

State the domain and range of the following function {(2,3),(7,9),(4,-7),(6,2)(3,-5)

Answers

The domain is the set of all the values of x. The range is the set of all the values of y.
Domain: {2,7,4,6,3}
Range: {3,9,-7,2,-5}

mark has 100$in his savings account. He earns 25$ a week mowing lawns. If mark puts all of his earnings from mowing lawns into a savings account, how many weeks will it take for him to have 500$?

Answers

400 / 25 = 16
400+ 100 = 500
Therefore the answer is 16

The graph shows the relationship between the time and the distance a train traveled. Distance Traveled Distance (kilometers) 80- 70- 60- 50+ 40+ 30- 20+ 10+ 0 10 (40, 50) 20 30 40 50 60 Time (minutes) What does the point (40, 50) represent on the graph? Enter the answers in the boxes to complete the sentence. The point (40, 50) shows that in ✓ minutes, the train traveled kilometers.​

Answers

Answer:

in 40 minutes ... travelled 50km

Step-by-step explanation:

For a project in his Geometry class, Feng uses a mirror on the ground to measure the height of his school’s flagpole. He walks a distance of 8.65 meters from the flagpole, then places a mirror on flat on the ground, marked with an X at the center. He then steps 1.1 meters to the other side of the mirror, until he can see the top of the flagpole clearly marked in the X. His partner measures the distance from his eyes to the ground to be 1.65 meters. How tall is the flagpole? Round your answer to the nearest hundredth of a meter.

Answers

The height of the flagpole, found using the ratio of the sides of similar triangles is 12.975 meters

What are similar triangles?

Similar triangles are triangles  in which two angles of one triangle  are congruent to two angles in the other triangle, such that they have the same shape.

The parameters that can be used to find the height of the flagpole are;

Distance of the mirror from the flagpole = 8.65 meters

Distance of Feng on the other side of the flagpole = 1.1 meters

The height from Feng's eyes to the ground = 1.65 meters

According to the law of reflection, the angle of incident and the angle of reflection are the same

The angle made by Feng and the ground = Angle made by the flagpole and the ground = 90°

The triangle formed by the Feng and the flagpole are therefore similar by AA similarity postulate

The ratio of corresponding sides of similar triangles are the same, therefore;

[tex]\dfrac{1.65}{Height\, of \, the \, flagpole} = \dfrac{1.1}{8.65}[/tex]

[tex]Height\, of \, the \, flagpole = \dfrac{1.65}{1.1} \times 8.65 = 12.975[/tex]

Height of the flagpole = 12.975  meters

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Penny has 14 coins, all nickels, dimes, and quarters, totaling $2. 50. She has twice as many dimes as nickels, and twice as many quarters as dimes. How many dimes does she have?.

Answers

Out of the 14 coins she has, she will have 4 dimes, totaling $2.5.

What is expression?

Mathematical expressions consist of at least two numbers or variables, at least one arithmetic operation, and a statement. It's possible to multiply, divide, add, or subtract with this mathematical operation. An expression in mathematics is made up of numbers, variables, and functions (such as addition, subtraction, multiplication or division etc.) You can think of expressions as being comparable to phrases. A phrase in language may contain an action on its own, but it does not constitute a whole sentence.

Here,

Let n be the nickels, d be the dimes, q be the quarters.

Total coins=14

Total amount=$2.5

n=2d

d=2q

q=d/2

d+q+n=14

d+2d+d/2=14

2d+4d+d=28

7d=28

d=4

She will have 4 dimes out of 14 coins that she owns with an amount of $2.5.

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this is the question

Answers

Answer:

1. no solution

2. one solution

3. infinitely many solutions

4. one solution

Step-by-step explanation:

1. same slope, different intercepts, parallel lines, no solution

2. different slopes, lines intersect at 1 point, one solution

3. same equation, infinitely many solutions

4. different slopes, lines intersect at 1 point, one solution

1. no solution
2. one solution
3. infinity many solutions
4. one solution

Lela is making peach pies. She uses 9 peaches for each pie. If she uses 18 peaches for 2 pies and 36 peaches for 4 pies, how many peaches will she need for 7 pies?
A.45
B.54
C.63
D.70

Answers

Question :

Lela is making peach pies. She uses 9 peaches for each pie. If she uses 18 peaches for 2 pies and 36 peaches for 4 pies, how many peaches will she need for 7 pies?

A. 45 B. 54C. 63D. 70

Answer :

C. 63

Explanation :

As, Lela is using 9 peaches for each pie.

Thus, she used 18 peaches for 2 pies, which is 2 times 9 and 36 peaches for 4 pies, which is 4 times 9. Therefore, to make 7 pies, she would need :

Peaches used for one pie = 9

=> Peaches used for 7 pies = 9 × 7

=> Peaches needed for 7 pies = 63

Hence, she will need 63 peaches to make 7 pies.

63. 9 (peaches) times 7 (pies)

1. If candy canes cost.89 a dozen, how much would it cost to buy candy canes for a school with 400 students? Show all work!​

Answers

400 times 89 = 35600


In 2017, a company's sales were about $9 million. Sales increased at an approximately constant rate and reached
about $14.5 million in 2020, Estimate the sales in 2026. Show your work.

Answers

Answer: To estimate the company's sales in 2026, we need to find the average increase in sales per year and then use that to predict the sales for 2026.

The total increase in sales from 2017 to 2020 was $14.5 million - $9 million = $<<14.5-9=5.5>>5.5 million.

The number of years from 2017 to 2020 is 2020 - 2017 = <<2020-2017=3>>3 years.

Therefore, the average increase in sales per year was $5.5 million / 3 years = $<<5.5/3=1.83>>1.83 million/year.

Since the average increase in sales per year was $1.83 million/year, we can estimate the sales in 2026 by adding that amount to the sales for each year from 2020 to 2026. For example, the estimated sales for 2021 would be $14.5 million + $1.83 million = $16.33 million. Similarly, the estimated sales for 2022 would be $16.33 million + $1.83 million = $18.16 million, and so on.

Using this method, we can estimate that the sales for 2026 will be $26.73 million.

Sandra has 10 books. She divides them into groups of 2 each. How many groups can she make?

Answers

Answer:

5 groups

Step-by-step explanation:

10/2=5

Which of the following is not a benefit of stressing
1. Poor circulation
2. Increased speed and power
3. Increased flexibility
4. Minimized chances of injuries

Which of the following is not in upper body stretch?
1. Arms circles
2. Trunk twist
3. Straddle stretch
4. Triceps stretch

Answers

The option that is not a benefit of stretching is 1. Poor circulation

The option that is not in upper body stretch is 3. Straddle stretch

What are the Advantages of Stretching?

The benefits include:

Increase your physical activity performance.Reduce your risk of injury.Assist your joints in moving through their entire range of motion.Increase blood flow to the muscles.Allow your muscles to work as efficiently as possible.Improve your ability to perform daily tasks.

The straddle stretch is one that is not considered an upper body stretch. Straddle stretch, also known as the middle split, requires a lot of leg flexibility. In conclusion, the correct option is C.

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If the simple interest on $2,000 for 10 years is $1,400, what is the interest rate?

Answers

Answer: I = $ 200.00

Step-by-step explanation:

I = Prt

Convert R (percent) to r (decimal)

r = R/100 = 1%/100 = 0.01 per year

I = 2000 × 0.01 × 10 = 200

I = $ 200.00

hope this helps!

From a normally distributed population, a simple random sample of size 30 is taken. The mean of the sample is 144 and the standard deviation of the sample is 12. Which interval is a 99% confidence interval for the population mean?.

Answers

On solving the provided question, we got that The 90% confidence interval for the population mean mu is (140.4, 147.6)

The meaning of the standard deviation

A measure of how far the data are from the mean is called standard deviation (or). Data that have a low standard deviation are more likely to be centered around the mean than those that have a high standard deviation.

xbar = 144 (sample mean)

s = 12 (sample standard deviation)

n = 30 (sample size)

z = 1.645 (critical value at 90% confidence; use a calculator or table to compute this value)

[tex]The lower limit of the confidence interval is L, which is found by\\\\L = xbar - z(s/sqrt(n))\\L = 144 - 1.645(12/sqrt(30))\\L = 140.395985571616\\L = 140.4\\[/tex]

Similarly the upper limit U is

U = xbar + z(s/sqrt(n))

U = 144 + 1.645(12/sqrt(30))

U = 147.604014428384

U = 147.6

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The perimeter of a rectangular pool i 110 feet. If the pool i 17 feet wide, find the length of the pool

Answers

It will be 38 feet long

What is perimeter?

The perimeter is the space surrounding a shape's edge.

The sum of the lengths of all the sides in a rectangular shape is its perimeter. P = 2( L+B)

Given that a rectangle's width is 17 feet and its perimeter is 110 feet, the length will be P = 2 (L + B)

110 = 2 (L + 17)

55 - 17 = L.

The pool is therefore 38 feet long.

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god is good everyday and all time

Answers

The LORD is faithful to all generations, and His loving kindness endures forever.

Explain about the god is good everyday and all time?

God Is Love, Therefore God Is Good God is light, and He is also love. God "is love." Because God loved the world so much that he gave his one and only Son, he ensured that everyone who trusted in him would not perish but have eternal life.

In the church, the adage "God is good, all the time, all the time" gained popularity a number of years ago. It is still in use today and was once used as a welcome and a response, frequently in a call-and-response pattern.

The Oxford English Dictionary describes omnibenevolence as unlimited or infinite compassion.

The complete question is,

Why is God so merciful all the time?

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Mrs tucker writes the fraction 11/4 Taylor earns $10.35 per hour and is paid double-time for each hour that she works over 40 hours in a week. Determine Taylor's gross pay if she worked 48 hours last week. $248.40$579.60$596.80$414.00 1. What abstraction does an OS provide for the CPU?2. What abstraction does an OS provide for the memory?3. What abstraction does an OS provide for the disk space? What is the legacy of the Civil War on African Americans in Louisiana, Citizens of Louisiana, and Union soldiers occupying Louisiana?Use evidence from the resources provided to support your claim/s. Jim began a 255-mile bicycle trip to build up stamina for a triathlete competition. Unfortunately, his bicycle chain broke, so he finished the trip walking. The whole trip took 7 hours. If Jim walks at a rate of3 miles per hour and rides at 39 miles per hour, find the amount of time he spent on the bicycle. Name two sets of alternate interior angles. help me please hurry up fr :( PLEASE HELP!!!!! 20 POINTS!!! The Shultz family went apple picking. Jeshua picked 16 red apples, as many yellow apples as red apples and 28 green apples. How many apples dir he pick in all? PLS HELP ME!!!!!! I ONLY HAVE 5 MINS!!!! 50 PTSJanie and Jasmine are playing three games at an arcade. Each of the games requires either 2, 3, or 4 tokens. The girls plan to play as many games as they can before running out of tokens. Let m represent the number of games that require 2 tokens; n represent the number of games that require 3 tokens; and p represent the number of games that require 4 tokens.Janie plays the 3-token game four times. Write two equivalent expressions to represent the number of tokens that Janie will need to play each of the three games at least one time. Why does mainland europe have a wider variety of plant life than the british isles?. What did Roger Sherman have to do with the Great Compromise? I need a detailed explanation, please! ~Describe each transformation in words.11.) _____________________. PLEASE HELP ASAP ITS URGENT!!!!!!!!!!!!!!!!!! Let A={9,8,3,0,5} and B={8,4,7,5,0}. Select from the following choices the one that represents the intersection of A and B? The Joint Commission uses the word "medication" to mean:a. Any agent to treat a patientb. Any agent to diagnose a patientc. Over-the-counter preparationsd. Herbal remediesg. All of the above Factorise 64(x-9x+18)=4x 2Write an equation in slope-intercept form that models the situation. In order to go bowling,you must pay a one-time fee of $10 for rental shoes, and then pay $3 per game. Let yrepresent the total cost of bowling after playing x games. * (5 Points)y=-3x+10y=3x+10y=10x-3y=10x+3y=-10x+3 please help:show that two quadrilaterals are congruent the 2013 supreme court case shelby county v. holden invalidated the key accomplishments of the voting rights act of 1965, which led to a cascade of new state laws intended to limit the right to vote for poor people of all races. true or false? Which positive even integer, when added to the following2 consecutive odd integers, creates a sum of 40?