how to find the area of a circle

Answers

Answer 1

Answer:

A=~r

Step-by-step explanation:

Answer 2

Answer:

To find the area of a circle use the formula:  A = π * r^2

r is the radius that is given.

Example:  Find the area of a 5 in radius circle

A = π * (5)^2

A = 25π

A = 78.54

Hope this helps :)


Related Questions

ILL GIVE BRAINLIEST!!!!!!!!!!!!!!!!!!!!!!!!!! PLEASE QUICKLY!!!!!!!!!!!!!!!!!!!!!!!

Carina spent a total of $5.27 buying a pineapple for $3.40 and some tomatoes that were on sale for $0.85 per pound. To determine the number of pounds of tomatoes that she bought, x, Carina wrote and solved the equation as shown below.

3.40 + 0.85 x = 5.27. 0.85 x = 8.67. x = 10.2 pounds.

Where, if anywhere, did Carina make an error?
Carina did not make any errors.
The initial equation that Carina wrote was incorrect.
Carina should have subtracted 3.40 from 5.27.
Carina should have divided 8.67 by 0.85.

Answers

Answer:

the correct answer is supposed to be 2.2 pounds.

So, C. Carina should have subtracted 3.40 from 5.27.

Step-by-step explanation:

Tip - look up on brainly or some sort of browser before waste points on asking....

Here:

5.27= 3.40+ 0.85x, we have our total our price of one pineapple and our variable

next I isolate the variable:

5.27-3.40=0.85x

next:

1.87=0.85x

Answer

x= 2.2

Credit to - https://brainly.com/question/4504639

Answer:

Option C, Carina should have subtracted 3.40 from 5.27.

Step-by-step explanation:

Step 1:  Convert words into an equation

Carina spent a total of $5.27 buying a pineapple for $3.40 and some tomatoes that were on sale for $0.85 per pound.

3.40 + 0.85p = 5.27

Step 2:  Solve for p

3.40 + 0.85p - 3.40 = 5.27 - 3.40

0.85p / 0.85 = 1.87 / 0.85

p = 2.2

The error was found when she add 3.40 to 5.27 instead of subtracting.

Answer:  Option C, Carina should have subtracted 3.40 from 5.27.

Which of the following expressions results in 0 when evaluated at x = 3?

Answers

Answer:

You need to provide the expressions you have to choose from.

Step-by-step explanation:

Help I am confused i don’t remember how to answer this.

Answers

Answer:

5/6

Step-by-step explanation:

I hope this helps!

Answer:

5/6

Step-by-step explanation:

so for the first equation I would keep 1/3 the same

flip the division sign to multiplication

and turn the second fraction 4/10 upside down so it becomes 10/4

[tex]\frac{1}{3} *\frac{10}{4} =10/12[/tex]

10/12 can be simplified by dividing 2 on the numerator and denominator

10/2=5

12/2=6

5/6

for the second equation I know that each number in the first equation should be present in the second(since they are all the same numbers). However, 5/6 is not present in the second equation so that is the missing number

Hope this helps!

A colony of 300,000 bacteria doubles in size every 35 minutes what will the population be 70 minutes from now ?

Answers

Answer:

1,200,000

Step-by-step explanation:

300,000 x 4

It doubles every 35 minutes so you multiply by 4

Answer:

X=600000

Step-by-step explanation:

Let the unknown value for 70minutes be x

So let's solve the given question

300000 bacteria is double in every 35minutes

So to solve we will have

300000 bacteria=35minutes

X bacteria=70 minutes

So let's cross multiply

35x=300000×70

Let's make x the subject of formula by dividing both sides by 35

X=300000×70/35

X=300000×2

X=600000

Therefore the population in 70 minutes is 600000

Solve this system of linear equations: 4x-2y=8 Y=3/2x-2

Answers

Final answer:

The solution to the system of equations is x = 4 and Y = 4.

Explanation:

To solve the system of linear equations, we can use substitution. Since we have the equation Y = 3/2x - 2, we can substitute this expression for Y in the first equation.

Substituting Y = 3/2x - 2 in 4x - 2y = 8:

4x - 2(3/2x - 2) = 8

Simplifying the expression:

4x - 3x + 4 = 8

x + 4 = 8

Solving for x:

x = 8 - 4

x = 4

Substituting the value of x into Y = 3/2x - 2:

Y = 3/2(4) - 2

Y = 6 - 2

Y = 4

Therefore, the solution to the system of equations is x = 4 and Y = 4.

Step-by-step explanation:

Got it right on edge. You can too

PLEASE HELP NOW!! Will grant brainliest

Answers

(f·g)(x) is x^5 - 5x^4 + 4x³ - x² + 5x - 4

Step-by-step explanation:

Step 1: Given, f(x) = x² - 5x + 4 and g(x) = x³ - 1 Find (f·g)(x)

(f·g)(x) = f(x)·g(x) = (x² - 5x + 4)(x³ - 1)

                          = x^5 - 5x^4 + 4x³ - x² + 5x - 4

                          = x^5 - 5x^4 + 4x³ - x² + 5x - 4


The graph shows the linear inequality y < x + 2.
Explain everything the line tells us. Why is it dashed?

Answers

Answer:

The reason why line is dashed because the inequality is indicating '<'.

Here, graphing a dashed line, then shading the area below the boundary line since y is less than x+2.

Step-by-step explanation:

Important things to observe when we graph the inequality.

Any inequality involving < or > will have a graph as a dotted line, whileAny inequality involving ≤ or ≥ will have a graph as a solid line.

Given the inequality

[tex]y\:<\:x\:+\:2[/tex]

The reason why line is dashed because the inequality is indicating '<'.

Here, graphing a dashed line, then shading the area below the boundary line since y is less than x+2.

The graph is attached below.


What is the probability of getting a head with the flip of a coin?
A) 0/2
B) 1/4
C) 1/2
D) 2/2

Answers

Answer:

1/2

Step-by-step explanation:

there is two side of a coin, so there is a 1/2 chance that you will head heads.

A coin has two sides, one side is heads, and the other is tails. Since there are 2 sides the probability of getting either heads or tails is 1/2. Therefore, the probability of flipping a coin and getting heads is C) 1/2.

Best of Luck!

PLEASE HELP IT'S SO IMPORTANT PLZ

create word problems that required multi-step mathematical thinking, such as the solution of the equation is then used to determine the actual solution of the question, and SOLVE IT.

Answers

Will this help?

Answers:

1. $8 left

2. 4 minutes

3. 9 balloons

Questions

1. Craig has a twenty dollar bill. He buys six squirt guns

for $2 each. How much money did Craig have left?

2. Lauren and Gina's mother told her daughters they can

swim in the pool for 20 minutes. First, they swam laps in

the pool for 7 minutes. Then they swam underwater for

one minute. Then they played water polo for 8 minutes.

How much longer can they stay in the pool?

3. Maria invited 4 of her friends over for a water balloon fight in

the backyard. At the start of the game, Maria gave each of

her friends 2 water balloons. She had one water balloon for

herself. How many water balloons did they have altogether?

What is the solution to the inequality?


6x−5>−29


A.
​ x>−4 ​

​B.
x<4 ​

C.
​ x<−4 ​

​D.
x>4 ​

Answers

C is the right answer

Which graph shows a system of equations that solves - 2/(x - 1) = 4 , and the solution itself?

Answers

Answer:The answer is A

Step-by-step explanation:

The solution is x = -2/5.

How to solve the equation?

The equation can be simplified by doing some algebra.

- 2/(x - 1) = 4

-2 = 4 (x-1)

-2 = 4x - 4

2 = 4x

x = 4/2

x= 0.5

What's an example of an equation?

An equation is a mathematical announcement that is made up of expressions connected by way of an identical sign. for instance, 3x – 5 = 16 is an equation. solving this equation, we get the fee of the variable x as x = 7.

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HELP PLEASE BE QUICK

Answers

Answer:

Radius is 2 centimeters

Step-by-step explanation:

4π is the area of a circle

Area of a circle = πr^2

4π / π = πr^2 / π

sqrt(4) = sqrt(r^2)

2 = r

Answer:  Radius is 2 centimeters

Quadrilateral ABCD was transformed to create A'B'C'D'. If A'B'C'D' is reflected over the y-axis, what will be the coordinates of D''?
Math item stem image
CLEAR CHECK

(-2, -3)


(-2, 3)


(2, -3)


(2, 3)

Answers

Answer: This question is impossible to answer if the original coordinate of D is not known

Step-by-step explanation: In order to answer this question you need to know what the coordinate of D is

The coordinates of D'' will be; (-2, 3)

How does transformation of a function happens?

The transformation of a function may involve any change.

Usually, these can be shift horizontally (by transforming inputs) or vertically (by transforming output), stretching (multiplying outputs or inputs) etc.

We are given that Quadrilateral ABCD was transformed to create A'B'C'D'. If A'B'C'D' is reflected over the y-axis, then

A(-5,-3); B(-6,-1); C(-3,-1) ; D(-2,-3)

When a refection is done about x-axis, the values of the abscise x remain identical & the value of ordinate;

A(-5,-3); A'(-5,+3)

B(-6,-1); B'(-6,+1)

C(-3,-1); C'(-3,+1)

D(-2,-3); D'(-2,+3)

A'B'C'D' is translated 3 UNITS RIGHT, that means the ordinated of A'B'C'D' are the same but the abscises have been increased by 3 UNITS then the coordinates of D'' is (-2, 3)

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how can something me nonlinear

Answers

i won’t be a straight line

The length of a rectangle is 3 centimeters less than twice the width. If the perimeter of the rectangle is 24 centimeters, find its dimensions.

Answers

Answer:

Width = 5 cm

Length = 7 cm

Step-by-step explanation:

Width = w

Length = 2w - 3

Perimeter = 24 cm

2* (length + width ) = 24

2*(2w-3 +w) = 24

2*(3w -3) = 24

3w - 3 = 24/2

3w - 3 = 12

3w = 12+ 3

3w = 15

w = 15/3

w = 5cm

Length = 2w - 3 = 2*5 - 3 = 10-3 = 7 cm

length = 7 cm

What is the volume, in cubic m, of a cube with an edge length of 11m?

Answers

the volume of cube with edge length 11 m is [tex]Volume = 1331m^3[/tex] .

Step-by-step explanation:

Here  we have a side length of a cube as 11 m . We need to find the volume of cube . Let's find out:

We know that every side of a cube is identical and equal . And volume of cube is given by formula :

⇒ [tex]Volume = (side)^3[/tex]   ...........(1)

According to question we have following parameters as

[tex]side = 11m[/tex]

Putting this in (1)

⇒ [tex]Volume = (11m)^3[/tex]

⇒ [tex]Volume = 11(11)(11)m^3[/tex]

⇒ [tex]Volume = (121)(11)m^3[/tex]

⇒ [tex]Volume = 1331m^3[/tex]

Therefore , the volume of cube with edge length 11 m is [tex]Volume = 1331m^3[/tex] .

The volume of the cube is 1331 m³

Explanation:

Given:

side of the cube, a = 11m

Volume of the cube, v = ?

we know:

Volume of the cube = (a)³

V = (11m)³

V = 1331 m³

Therefore, the volume of the cube is 1331 m³

N x 23 = 8.05 solve for N

Answers

Answer:

0.35

Step-by-step explanation:

Just divide 8.05 by 23

The answer you are looking for is 0.35.

To solve for any variable (N in this case) you must get it by itself, by doing the opposite operation. To do so for this problem, divide 23 from both sides. In doing so, N will be by itself, and you'd then just divide 23 from 8.05. Thus getting 0.35 as an answer.

I hope this helps!

What is an equation of the line that passes through the points (7, -6) and (3, -6)

Answers

Answer:

y=-6

Step-by-step explanation:

Gohan earned scores of 95, 100, 65, 95, 75, 98, 100, 55, 100, 45 on his last ten quizzes. What is the mean of his quiz scores? What is the median of his quiz scores? What is the mode of his quiz scores?

Answers

Answer: Mean= 82.8

Median= 95

Mode=100

Step-by-step explanation:

Mean is the average of the scores

Mean= 95+100+65+95+75+98+100+55+100+45 =828/10= 82.8

To get the median, we rearrange the numbers in either ascending or descending order.

45,55,65,75,95,95,98,100,100,100

Median= 95

Mode is the number that occurs most which is 100

Answer:

Answer: Mean= 82.8

Median= 95

Mode=100

Step-by-step explanation:

I got this correct, hope this helps:)

The circumference of a circle is 15 meters. Find the area. Use 3.14 for π.

Answers

The correct answer is 17.85.

1 + 1 2 ⋅ (4x − 6) = −2

Answers

1.4375

Step-by-step explanation:

Step 1:

Let the given equation be     [tex]1+12(4X-6)=-2[/tex]

To find X simplification of terms using BODMAS ( Brackets Orders Division Multiplication Addition Subtraction) is done as follows.

Step 2:

Let us expand the equation as [tex]1+ (12*4X)-(12*6)=-2[/tex]

Step 3:

Let us expand it further as [tex]1+48X-72=-2[/tex]

Step 4:

To find X segregate X in one side and all other remaining terms in other side as follows

[tex]48X=-2+72-1[/tex]

After the simplification the numerical value is

[tex]48X=69[/tex]

Step 5:

Keep X along one side and bring 48 to the denominator of another side to find X as follows

[tex]X=69/48[/tex]

And the value of X is 1.4375

Answer:

x = 1 7/16

Step-by-step explanation:

1 + 1 2 ⋅ (4x − 6) = −2

Subtract 1 from each side

1-1 + 1 2 ⋅ (4x − 6) = −2-1

1 2 ⋅ (4x − 6) = −3

Distribute the 12

48x -72 = -3

Add 72 to each side

48x-72+72 = -3+72

48x =69

Divide by 48

48x/48 = 69/48

x =1 21/48

x = 1 7/16

Each of the letters of the word ALABAMA are written on a piece of paper and then put into a bag. A piece of paper is drawn at random. What is the theoretical probability, as a decimal, of drawing an A? Round the decimal to the nearest hundredth.

Answers

Final answer:

The theoretical probability of drawing an 'A' from the word 'ALABAMA' is 0.57. This result arrives from dividing the number of 'A's (4) by the total number of letters in 'ALABAMA' (7).

Explanation:

The question deals with a probability problem related to the selection of letters from the word 'ALABAMA'. The word 'ALABAMA' has 7 letters out of which 4 are 'A's. The theoretical probability is calculated as the number of successful outcomes divided by the total number of outcomes. Since we are interested in drawing an 'A', the successful outcomes are the number of 'A's which is 4, and the total outcomes are the total number of letters which is 7.

To calculate theoretical probability, you divide the number of successful outcomes by the total number of outcomes. In this case, the calculation will be 4 / 7 = 0.57 (rounded to the nearest hundredth).

So, the theoretical probability of drawing an A from the word 'ALABAMA' in decimal form, rounded to the nearest hundredth, is 0.57.

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A triangle has sides with lengths of 4 meters, 5 meters, and 7 meters. ​Is it a right triangle

Answers

A triangle has sides with lengths of 4 meters, 5 meters, and 7 meters. It is a right triangle because the square of the largest side length is not equal to the sum of the square of the other two small side lengths and it can be determined by using the properties of the right triangle.

Given that,

A triangle has sides with lengths of 4 meters, 5 meters, and 7 meters. ​

We have to determine,

Is it a right triangle?

According to the question,

To determine the right triangle following all the steps given below.

A triangle has sides with lengths of 4 meters, 5 meters, and 7 meters. ​

The condition for the right triangle;

The square of the largest side length is not equal to the sum of the square of the other two small side lengths then it is called the right triangle.

Then,

[tex]= (4)^2+(5)^2 = 7^2\\\\= 16 +25 = 49\\\\=41\neq 49[/tex]

Hence, Yes it is a right triangle because the square of the largest side length is not equal to the sum of the square of the other two small sides lengths.

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54 months = _____ years 5.4 years 4 years 4.5 years 5 years

Answers

the answer would be x=2936.7

Answer:

C 4.5 years

Step-by-step explanation:

54 divided by 12 ( because 12 months is a single year) is 4 years and 6 months and since 6 months is half of twelve months your answer would be 4.5 years.

Prove algebraically what type of function this is (even, odd, or neither).

Answers

The given function is even.

Solution:

If f(-x) = f(x), then the function is even.

If f(-x) = -f(x), then the function is odd.

Given function:

[tex]f(x)=x^{6}-x^{4}[/tex]

Substitute x = -x

[tex]f(-x)=(-x)^{6}-(-x)^{4}[/tex]

          [tex]=x^{6}-x^{4}[/tex]

          = f(x)   (given)

   f(-x) = f(x)

From the definition, it is even.

Hence the given function is even.


A group of middle school boys have a mean height of 167 cm and a range of 164 cm to 169 cm. A group of high school boys have a mean height of 180 cm and a range of 175 cm to 183 cm. Which statement BEST compares the two groups of boys?

Answers

Answer:

C

Step-by-step explanation:

The high school boys vary in height more than the middle school boys.

middle school boys range = 169 − 164 = 5 cm

high school boys range = 183 − 175 = 8 cm

The range for both conditions is 5 cm and 8 cm respectively.

What is the range?

The difference between the highest and lowest value data points of the provided data is known as the range in mathematics.

In statistics, the mean is the product of all the values in a set of data divided by the total number of values in the data for a given set of observations.

The high school boys vary in height more than the middle school boys.

Middle school boys range = 169 − 164 = 5 cm

High school boys range = 183 − 175 = 8 cm.

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a group of rangers work 5 days per week. it takes them 4 days to plant trees on 1/2 acre.what is the unit rate per week

Answers

Final answer:

The unit rate at which the group of rangers plants trees is 5/8 of an acre per week, which is found by calculating the daily acreage planted and then multiplying by the number of workdays in a week.

Explanation:

To determine the unit rate per week of the group of rangers planting trees, we need to calculate how much of an acre they can plant in a standard work week. As it takes them 4 days to plant trees on 1/2 acre, they will plant 1/2 acre in every 4 days of work. Since they work 5 days per week, we can adjust the ratio to calculate the weekly rate:

1/2 acre in 4 days is equivalent to (1/2 acre)/(4 days).Now, find out how much is planted in 1 day: (1/2 acre)/(4 days) = 1/8 acre in 1 day.Finally, multiply by 5 to get the weekly amount: (1/8 acre) * 5 days = 5/8 acre per week.

Therefore, the unit rate at which the group of rangers plants trees is 5/8 of an acre per week.

Pls help me with this question

Answers

The solutions are £5575, £312.5 and £345 respectively.

Step-by-step explanation:

Step 1: Find the amount of Swedish kronor received by Theo in exchange for £500

£1 = 11.15 kr

⇒ £500 = 500 × 11.15 = £5575

Step 2: Find the amount of Swiss francs received by Theo in exchange for £250

£1 = 1.25 CHF

⇒ £250 = 250 × 1.25 = £312.5

Step 3: Find the pounds to get 407.10 euros.

£1 = 1.18 euros

⇒ 407.10 euros = 407.10/1.18 = £345

Solve for x (to the nearest tenth)

Answers

Step-by-step explanation:

By Geometric mean property:

[tex]x = \sqrt{5 \times 3} \\ = \sqrt{15} \\ = 3.87298335 \\ \huge\orange {\fbox{\therefore \: x \approx \: 3.9}} [/tex]

16 m, 21 m, 39 m in geometry tryna find out how to measure the side length that could form a triangle

Answers

Step-by-step explanation:

The given measurements are:

16 m, 21 m, 39 m

We know that, it is only possible to form a triangle if sum of the measures of any two lengths is always grater than the measure of third length.

[tex] \therefore \: 39 + 21 = 60 > 16 \\ \\ \: \: \: \: \: \: 16 + 39 = 55 > 21 \\ \\ \: \: \: \: \: \: 16 + 21 = 37 \ngtr39 \\ \\ \because \: last \: mathematical\: statement \: is \:\\ defying \: the \: above \: law \\ [/tex]

Therefore, it is not possible to form a triangle with given measurements.

The given lengths cannot form the sides of a triangle because they dont satisfy the sides of a triangle rule.

What is the sides of a triangle rule say?

The sides of a triangle rule asserts that the sum of the lengths of any two sides of a triangle has to be greater than the length of the third side.

Given here, are the sides 16 m, 21 m , 39m

now if the two sides are 16, 21 then their sum is 16+21 = 37 but 37<39 thus combination of lengths cannot form a triangle

Hence, the lengths 16,21,39 cannot form the sides of a triangle

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Give a big-O estimate for the number of operations, where an operation is a comparison or a multiplication, used in this segment of an algorithm (ignoring comparisons used to test the conditions in the for loops, where a1, a2, ..., an are positive real numbers). m : Which of the following describe the father and son relationship? You have just started an internship on a graphic design team and you are learning about graphic formats used on the web. Which of the following graphic formats should you use for comic-style drawings? The human disease phenylketonuria has symptoms that include mental problems, chronic skin rashes, and reduced hair and skin pigmentation. Phenylketonuria can be caused by a mutation in a single gene.Phenlyketonuria is an example of pleiotropy. Based on this, it can be concluded that pleiotropy occurs whenA. a single gene influences multiple traits. B. a trait is influenced by both genes and environment. C. a trait is not influenced by genes. D. a single trait is influenced by many genes. 10)An income tax rate cut will most likely ____ aggregate demand and _____ aggregate supply.A)increase; increaseB)increase; decreaseC)decrease; decreaseD)decrease; increase Which of the following was an effect of the discovery of gold and silver on western development?A. It caused a Sharp Decrease in the population of eastern citiesB. There was no longer a need for the railroadC. The value of gold and silver decreasedD. It Contributed to the opening of the western frontier. I picked C. The value of gold and silver decreased. but im still thinking that it is D so im having some confusion any help would mean alot Which general area of specialization are you in if you are managing the accounting function for a large organization, such as one that trades on public stock exchanges?You are in the _____________ specialization if you are managing the accounting function for a large organization, such as one that trades on public stock exchanges. X-1 0 1 2 fx 18 6 2 2/3 what is the decay factor of the exponential function represented by the table 1/3 2/3 2 6 If a standard dartboard's diameter is 17.75 inches, what is the area of once sector? Which of the following is the best description of reflective writing What are the job responsibilities of the Athenian assembly What events in Africa inspired Pan-Africanism? You may think that it is colder if you see several low electronic thermometer readings on your way to work than if you took a different route that did not provide this information and you had to make your judgment based on how cold it felt to you. Your judgment is affected by the visual feedback you are receiving from the thermometers according to the_______ Wha rid the value of n very confused and need help What were the goals of the Economic Opportunity Act by President Johnson? Alicia can paint a small room 21 hours faster than Nina aloneness 4 hours slower than Alicia and Nina together. How long will it take them to paint the room together? Express your answer in decimal form In the late 1990s, car leasing was very popular in the United States. A customer would lease a car from the manufacturer for a set term, usually two years, and then have the option of keeping the car. If the customer decided to keep the car, the customer would pay a price to the manufacturer, the "residual value," computed as 60 percent of the new car price. The manufacturer would then sell the returned cars at auction. In 1999, the manufacturer lost an average of $480 on each returned car (the auction price was, on average, $480 less than the residual value). A. Why was the manufacturer losing money on this program The power of monarchs is limited by a fundamental set of laws in a(n) __________.A.dictatorshipB.constitutional monarchyC.theocracyD.absolute monarchyPlease select the best answer from the choices provided.ABCD Bats fly around at night hunting for food. These creatures have a special way of getting around in the dark. A bat makes a sound using either its nose or mouth. The sound travels until it hits an object. The object may be a small insect or a large tree. Then the sound bounces back to the bat's ears.Addison is writing this paragraph about how bats get around in the dark. Which sentence should she use to end the paragraph?A)All bats have a very sharp sense of hearing.B)A bat will sometimes fly for miles to find food.C)The bat uses the echo to figure out where to go.D)Most bats only come out during the evening hours. A 12.0-g bullet is fired horizontally into a 109-g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring having spring constant 152 N/m. The bullet becomes embedded in the block. If the bullet-block system compresses the spring by a maximum of 78.0 cm, what was the speed of the bullet at impact with the block?