The circumference of a circle is 30. What is its area?

Answers

Answer 1
pi r squared is area.
2 pi r is circumference.

a =c^2 / 4pi = 30^2 / 4 * pi = 71.619
Answer 2

Answer:

71.62

Step-by-step explanation:

[tex]A = \frac{C^2}{4 \times \pi }\\A = \frac{30^2}{4 \times 3.14 }\\A = 71.62[/tex]


Related Questions

5. Write an equation with:
No solution:
Infinite solutions:
6. Bobby is going bowling. It costs $7.00 per game plus a one time fee of $10 for the
shoe rental. How many games can he play if he only has $59 dollars.
Define Variable___
Equation___
Solution___

Answers

Answer:

привет как вы это t6767

Step-by-step explanation:

Natasha has a job putting letters in envelopes to b mailed. In 1 hour she puts 42 letters in envelopes. which equation best represents y, the total number of letters Natasha puts in envelopes in x hours if she continues at this rate?

Answers

The equation which best represents the total number of letters Natasha puts in envelopes in x hours is y = 42x.

Given,

Number of letters Natasha puts in envelopes = 42 letters in 1 hour

Total number of letters Natasha puts in envelopes in x hours = y

We have to find the equation which best represents y:

Here,

Natasha puts 42 letters in 1hour

So, in x hour Natasha can put 42 × X letters.

That is,

y = 42 × x

y = 42x

Therefore, the equation which best represents the total number of letters Natasha puts in envelopes in x hours is y = 42x.

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The first three terms of the geometric series are: x+5,x+1, and x.
Calculate the:

a)Value of x
b) common ration
c) limiting sum

Answers

Answer:

Step-by-step explanation:

x= -2

A certain number has exactly 8 factors, including 1 and itself. If two of these factors are 21 and 35, what is the number?

Answers

58

hope this helps :]

Two buckets of paint have the same mass and temperature. They are combined into one larger bucket. The larger bucket starts at the same temperature as the paint. The larger bucket of paint has the same temperature as the original buckets of paint.

The amount of thermal energy in the larger bucket of paint is about ________ the amount of thermal energy in each of the smaller buckets of paint.

Is the space the same as, twice, or one-half?

Answers

The larger bucket paint contains roughly the same amount of thermal energy as each of the smaller buckets of paint.

What is defined as the thermal energy?

Thermal energy is the energy possessed by a substance or system as a result of particle movement within the object or system.

Thermal energy is one of several types of energy, with 'energy' characterized as 'the capacity to do work.'Thermal energy is a form of kinetic energy, that is energy due to motion, because it is caused by particle movement. Thermal energy causes something to have an internal temperature, which can be measured.

As, the thermal energy is due to the kinetic energy.

Thus, the kinetic energy of an object is directly proportional to its mass; thus, doubling the mass doubles the kinetic energy.

In, the given case, the paint contained in the two buckets are combined.

Thus, the mass is remained constant.

The larger bucket also have the the same temperature. thus, the thermal energy will not change.

Therefore, the amount of thermal energy with in larger bucket of paint is roughly equal to the amount of thermal energy in all of the smaller buckets of paint.

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Solve for g.
3g + 3 = 9
g=

Answers

Answer:g=2

3g+3-3=9-3

3g=6

3g/3=6/3

g=2

Step-by-step explanation:

there you go

Answer:

[tex] \bf \implies g \: = 2[/tex]

Step-by-step explanation:

[tex] \bf \longrightarrow3g + 3 = 9[/tex]

[tex]\bf \longrightarrow3g = 9 - 3[/tex]

[tex]\bf \longrightarrow3g = 6[/tex]

[tex]\bf \longrightarrow g = \bf\frac{ \cancel{6}}{\cancel{3}}2[/tex]

[tex]\bf \longrightarrow g = 2[/tex]

how did researchers come up with 684 coins needed to collect all of the pennies from 1959 to 1997?

Answers

The researchers came up with this number by making a model with specific coins to determine the difficulty, in terms of the probability of getting this coin.

What was the researchers purpose?

The researchers Shiyoung Lu and Steven Skiena wanted to know how probable it was to collect a complete set of pennies since 1959 until 1997. By the end of this study, they decided at least 684 coins must be collected to complete this mission.

Why did they come out with this answer?

Firstly, they analyze the probability for getting one coin. From this, it was concluded the probabillity was lower for old coins. After this, they used the data collected from all the coins and created an equation. This equation or model led them to conclude the answer was 684 coins.

Note: This question is incomplete because the text it refers to is missing; here is the name of the text:

"The Probabilities of Pennies"

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the formula v = x can be used to find the volume of a cube where x repersents the lenth of each edge of the cube

what is the volume of a cube with edges of lenth x=4 feet enter the answer as a whole number or decimal the box below

Answers

Answer:

64

Step-by-step explanation:

Formula is V = x³

For x = 4 feet
V =4³ = 4 x 4 x 4 = 64 cubic feet

One year is approximately 526000 minutes. Calculate, correct to the nearest whole number, the average number of times his eyes will blink per minute

Answers

Answer:

10520000 approximately I think

I will mark brainliest, answer choices are:

Quadrant I
Quadrant 2
Quadrant 3
Quadrant 4
A"(0,2)
A"(1,-2)

Answers

Answer:

ok..I think it Is C or B! not 100% sure tho..

BD bisects R
А.
9x
(8x + 3)º
D

Answers

Step-by-step explanation:

9x°+(8x+3)=180°

17x°+3=180°

17x°=180°-3°

17x°=177°

x=177/17

x=10.41

Solve. m/5=4 Responses 4/5 5/4 9 20

Answers

Answer: m=20

Step-by-step explanation:

Isolate m by multiplying 5 on both sides. m= 4*5 => m=20

help pleaseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

Answers

Just plug -4,0, and 4 into the equation and simplify. You should get 19, 3, & 19 as your answers




The library has 28 science fiction books. Each shelf holds 5 books,
how many ways can you place books on the shelf?

Answers

With Combination, There are the 98280 ways by which we place books on the shelf.

According to the statement

We have to find that the number of ways can by which place books on the shelf.

So, For this purpose, we know that the

A combination is a mathematical technique that determines the number of possible arrangements in a collection of items where the order of the selection does not matter.

From the given information:

The library has 28 science fiction books. Each shelf holds 5 books

Then

apply the combination,

Then

C(n,r) = C(28,5)

after solving it become

C(28,5) = 28! /(5!(28-5)!)

And

C(28,5) = 28! /(5!(23)!)

Then after rearranging the terms and solving the value becomes

C(28,5) = 98280.

So, With Combination, There are the 98280 ways by which we place books on the shelf.

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On January 1, 2021, Hoosier Company purchased $920,000 of 10% bonds at face value. The bond market value was $975,000 on December 31, 2021. Required: Prepare the appropriate journal entry on December 31, 2021, to properly value the bonds assuming the bonds are classified as: (If no entry is required for a transaction/event, select "No journal entry required" in the first account field.) Trading securities. Securities available-for-sale. Held-to-maturity securities.

Answers

The value of bonds assuming the bonds are classified as: (If no entry is required for a transaction/event, select "No journal entry required" in the first account field.) is Dr.$ [tex]$55,000[/tex] and Cr. $ [tex]55,000[/tex]

We are required to Prepare the appropriate journal entry on December 31, 2018, to properly value the bonds assuming the bonds are classified as

1. Trading securities.

2. Securities available for sale.

3. Held-to-maturity securities

For Dec 31,2021: For valuation of the bonds are classified as Trading securities (975,000-920,000) is Dr.$ [tex]$55,000[/tex] and Cr. $ [tex]55,000[/tex]

For Dec 31,2021: For valuation of the bonds are classified as Securities available for sale (975,000-920,000) is  Dr.$ [tex]$55,000[/tex] and Cr. $ [tex]55,000[/tex]

For Dec 31,2021: No journal entry required as this is held to maturity.

Bonds: The term "bond market" refers to all debt securities trades and issuance, and it is also used interchangeably with the terms "debt market," "fixed-income market," and "credit market." Bonds are frequently issued by governments to raise money for debt repayment and infrastructure development.

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Error Analysis henry incorrectly said the rate 1/3 / 1/6 can be written as the unit rate 1/18 pound per gallon. What is the correct unit rate? What was Henrys likely error?

Answers

The unit rate is 2 pounds per gallon.

Henry's likely error could have been that he multiplied  fractions instead of dividing.

Given the rate  1/3 / 1/6 pound per gallon, this can be written in the unit rate by dividing 1/3  by 1/6 pound per gallon.

So, 1/3 divided by 1/6 can be written as  [tex]\frac{1/3}{1/6}[/tex]

which further can be simplified as [tex]\frac{1}{3}[/tex] × [tex]\frac{6}{1}[/tex]

and the answer comes out to be 2

Hence, the unit rate is 2 pounds per gallon.

Henry's likely error could have been that he multiplied instead of dividing. That is, he multiplied 1/3 by 1/6, Such that he gets

Hence, the 1/27 pound per gallon he got.

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The equation below shows the relation between the temperature in degrees Celsius, C, and degrees Fahrenheit, F: F = 9/5C + 32

Which of the following formulas correctly solves for C?

A. C = 5F - 32/9

B. C = 5F/9 - 32

C. C = 9/5 (F - 32)

D. C = 5/9 (F - 32)

Answers

The formula that correctly solves for C is D. C = 5/9 (F - 32)

What is an equation?

In mathematics, an equation is a formula that expresses the equality of two expressions by connecting them with the equal sign = .

The given formula is,

F = 9/5C + 32

where Celsius is C, and degrees Fahrenheit is F

To solve for C let us isolate C to the one side and other terms to the other,

9/5 C = F - 32

Multiplying both side by 5/9 we get,

9/5 C *5/9 = 5/9* (F - 32)

or, C = 5/9 (F - 32)

which is the formula for C.

Thus, the formula that correctly solves for C is D. C = 5/9 (F - 32)

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Carl placed $3,700 in a savings account that compounds interest annually for a rate of 2%. How much will he have in the account for 10 years?

Answers

Carl will have $4514 in his account for 10 years

How to calculate the amount of money in carl account ?

Carl place $3700 in a savings account, this means that the principal is $3700

The rate is 2%

= 2/100

= 0.02

The number of years is 10

Therefore the money that will be in the account for 10 years can be calculated as follows

3700(1 + 0.02¹⁰)

= 3700(1.02¹⁰)

= 3700(1.22)

= 4514

Hence after a period of 10 years Carl will have $4514 in his bank account

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Solve for x
please i really need this i will give brainly

Answers

Answer:

x = 19

Step-by-step explanation:

The two angles shown here are congruent, so we will set them equal to each other. We will solve for x in the equation:

4x + 18 = 6x - 20

Subtract 4x from both sides:

18 = 2x - 20

Add 20 to both sides:

38 = 2x

Divide by 2 on both sides:

19 = x


So, the answer is “x = 19”

Hope this helps you!


Help answer ANY of these questions please!

Answers

9. Vertical angles theorem
10. x = 12; 2x+16 = x+28
11. D: x = 13, y = 115 (65 =5x, 360 = 65 + 65 + 115 + 115)
12. x = 131; 180 - 48 = 131

A square classroom is 5 to the power of 2 ft wide. The classroom has an area of

Answers

Answer:625 ft

Step-by-step explanation:

Given ,

The shape of classroom is a square .

The length of one side (width) is 5^2 ft = 25 ft

Area of a square classroom = (side)^3

=> Area = (5)^3 = 125 ft.

the soil for house plants consists of 12 percent water.if someone wants to plants flower that need 28 percent water in the soil, how many litters of water they need to add to 5 kg of soil?

Answers

1.111 liters of water must be added to 5 kilograms of soil.

How much water we need to add in a soil sample

According to the statement, water percentage is equal to the ratio of water mass divided by the total mass of water and dust and multiplied by 100. Then, the initial and final percentages are defined below:

Initial percentage

y / 5 = 0.12                              (1)

Final percentage

(y + x) / (5 + x) = 0.28             (2)

Then, we need to resolve the resulting system of linear equations:

y = 0.6                  (1)

y + x = 1.4 + 0.28 · x

0.72 · x = 1.4 - y

x = 1.944 - 1.389 · y

x = 1.111

We need to add 1.111 kilograms of water. If the density of a kilogram per liter, the volume required in liters is:

V = (1.111 kg) / (1 kg / L)

V = 1.111 L

1.111 liters of water must be added to 5 kilograms of soil.

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If wrong i ban psl an swer

Answers

D is a rigt answer.

Step-by-step explanation:

D is a right answer

The answer is D. The answer is really 6, but 6 to the power of one is equal to 6.

Substitute the given values into the given formula and solve for the unknown variable. if necessary, round to one decimal place.

Answers

The solution for the unknown variable in I = PRT where I = 2160, P =24000 and R = 0.03 is 3

How to substitute the given values into the given formula and solve for the unknown variable?

The given parameters are

I = PRT

Where

I = 2160, P =24000 and R = 0.03

Substitute I = 2160, P =24000 and R = 0.03 in the above equation I = PRT

2160 = 24000 * 0.03 * T

Evaluate the product

So, we have

2160 = 720 * T

Divide both sides by 720

T = 3

Hence, the solution for the unknown variable in I = PRT where I = 2160, P =24000 and R = 0.03 is 3

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HELP ME OUT PLEASE!!!!!!​

Answers

Answer:

I think its -6

Step-by-step explanation:

Hope it helps! =D

Graph the solution of the inequality on a number line. 3(x – 2) – (1 – x) > 2x – 7

Answers

The solution to the given inequality is x > 0. The graph of the solution to the inequality is shown below

Graphing Inequalities on a Number line

From the question, we are to determine the solution of the given inequality

The given inequality is

3(x – 2) – (1 – x)  > 2x – 7

Solving the inequality

3(x – 2) – (1 – x)  > 2x – 7

First, clear the parentheses by applying the distributive property

3x - 6 - 1 + x > 2x - 7

4x -7 > 2x - 7

Then,

4x - 2x > -7 + 7

2x > 0

x > 0/2

x > 0

Hence, the solution to the given inequality is x > 0. The graph of the solution to the inequality is shown below

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The set of all real numbers x that satisfies -3 [-3, 14)
Please select the best answer from the choices provided
true
flase

Answers

The set of all real numbers x that satisfies [-3, 14) are :

-3,-2.5, -1.4, -2,-1,0,1, 1.7, 2,π,.....13.

What is Rational number ?

In mathematics, a rational number is any number that can be written as a fraction, in which the numerator (the top number) and the denominator (the bottom number) are both integers, and in which the numerator is not equal to zero. In other words which can be written in p/q form.

Due to the fact that the rational numbers as well as the irrational numbers can be added together, we can derive real numbers. This means that all real numbers are not rational numbers, since they contain irrational numbers as well.

The given set of real number is [-3 , 14) which implies that -3 is included and 14 is excluded in the given set of numbers and it is find the values of x that satisfy the set [-3 , 14) that is :

x includes all the values which can be represented in p/q form for example :

-3,-2.5, -1.4, -2,-1,0,1, 1.7, 2,π,.....13

which includes negative both  rational number, whole numbner, integers, natural numbers.

Therefore, The set of all real numbers x that satisfies [-3, 14) are :

-3,-2.5, -1.4, -2,-1,0,1, 1.7, 2,π,.....13.

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PLEASE HELPME HERE please

Answers

The actual area of her office is 50 ft squared.

How to find the actual area of her office?

The blueprint for Zahra's new office measures 4 cm long and 2 cm wide.

The scale for the blueprint is 6 cm to 15 ft.

let's convert the units using the scale

6 cm = 15 ft

4cm = ?

cross multiply

length = 4 × 15 / 6

length = 60 / 6 = 10 ft

6 cm = 15 ft

2 cm = ?

cross multiply

width = 2 × 15 / 6

width = 30 / 6 = 5 ft

Therefore,

area of the actual office = 10 × 5

area of the actual office = 50 ft²

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Find the interest earned on a $30,000 deposit for six months at 1% interest, compounded continuously.

Answers

The interest earned on even a $30,000 deposit compounded monthly at 1% is $15150.75.

What exactly is compound interest?

Compound interest is applied when the principal amount changes after the specified time period.

For example, if you give someone $500 at a 10% yearly interest rate, $500 is your principal amount. After one year, the interest will be $50, and the principle amount will indeed be $550; therefore, the interest for the following year will be $550, not $500.

According to the given data:

P = P₀e^rt where r represents the annual interest rate as well as t represents the time period in years.

So,

P₀ = 30000

r = 1% = 0.01

t = 6 months = 0.5 year

So,

P = 30000e^0.01(0.5)

P = 30000 × 1.5050250835

P = $45150.752505

So, interest

I =45150.752505- 30000 = $15150.75

The interest earned on even a $30,000 deposit over six months at 1% compounded daily is $15150.75

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Help please (explain step by step)

Adrianna can read 7 pages in 10 minutes. At this rate, how many pages can she read in 25 minutes?

Part B
Max calculated that he could read at a rate of 2 pages per minute. Is he reading at a faster rate than Adrianna? Explain.

Answers

Answer:

A. 17.5

B. yes

Step-by-step explanation:

7/10=.7 page a minute

25*.7=17.5 pages in 25 minutes

B

she reads .7 pages a minute

2>.7

Answer:

Part A- 17.5 pages. Part B- Yes as he reads 20 pages as you want to have a the same amount as minutes so 1x10 is 10 and you want to do the same with 2 so 2x

10 is 20.

Step-by-step explanation:

Part A- 10 min-7 pages

5min-3.5 pages

7x2=14+3.5=17.5

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