What is the area of a circle whose radius is r?
What is the area of a circle whose diameter is 2x cm?


Answers

Answer 1

Answer:

Area of circle = πr^2

Area of circle when diameter is 2x; r=x

=πx^2


Related Questions

which graph should Mr.Salinas use to presentation to the city council and why?

Answers

Answer:

The Salinas Plan

The Salinas Plan is a Ten-Year Plan designed to provide the City with a path forward on maintaining a long-term balanced budget while preserving City services and addressing the affordable housing crisis.  The Salinas Plan may be found here.

The Salinas Plan Story

The Salinas Plan was presented to the City Council by representatives of the National Resource Network on December 4, 2018.  The Salinas Plan represented over a year of work analyzing the City's fiscal situation and current housing policies.  The Salinas Plan presented the following key findings:

- The City of Salinas is on a fiscally unsustainable path.  While the City's revenues are growing at 2.4% per year, expenditures are growing at 2.9% per year.

Step-by-step explanation:

7. Fuji the woodworker sells cribs. His start-up
costs total $2000. Labor and material for
each crib cost $185. If the formula for his
Cost(C) based on (n) number of cribs is:
C=2000 + 185n , Tell what the rate of change
is and what it tells us about Fuji's expenses.

Answers

Answer:

The rate of change is 185.

It tells us that Fuji's expenses increase by $185 for each additional crib made.

Step-by-step explanation:

In a linear equation, the rate of change is the change in y over the change in x.

In this situation, that means how much the cost will change based on the amount of cribs that Fuji has to make.

Since labor and material costs for each crib cost $185, 185 is the rate of change.

For every additional crib that Fuji makes, the cost will increase by $185.

So, the rate of change is 185 and it tells us that Fuji's expenses increase by $185 for each additional crib made.

Christine’s video store membership costs $5, and it costs $3.50 to rent a DVD. Christine spent $29.50 her first month. How many DVDs did she rent? Write as an equation.

Answers

Answer:

7 DVDs

Step-by-step explanation:

Christine spent $29.50 in total, and $5 on the membership.

so the amount of money spent on DVDs is $29.50 - $5, or $24.50.

The number of DVDs she rent are $24.50 / $3.50 = 7 DVDs

Answer:

7 DVDs

Step-by-step explanation:

We can create an equation to found out how many DVDs she rents. Let d = number of DVDs she rents.

3.50d + 5 = 29.50

~Subtract 5 to both sides

3.50d = 24.50

~Divide 3.50 to both sides

d = 7

Best of Luck!


Find the slope of the line passing through the points (-2, 1) and (3,-7)

Answers

(-2,1)(3,-7)

[tex]\\ \rm\Rrightarrow Slope=\dfrac{y_2-y_1}{x_2-x_1}[/tex]

[tex]\\ \rm\Rrightarrow Slope=\dfrac{-7-1}{3+2}[/tex]

[tex]\\ \rm\Rrightarrow Slope=\dfrac{-8}{5}[/tex]

Answer:

- 8/5

Step-by-step explanation:

m = slope

m = change in y/change in x

m = (y2 - y1)/(x2 - x1)

m = -7 - 1/3 - -2

m = -8/5

m = - 8/5

The slope is - 8/5

Question 2:
You are comparing the price of two different cars. The cost of car A f(x) after x years can be represented by the function:
Car A: f(x) = 22,500(0.88)x
The table shows the cost of car B g(x) after x years:
Car B:
1 year 24,750
2 years 20,495.48
3 years 16,970.26
g(x), cost in dollars




a) Is the cost of Car A increasing or decreasing? How do you know? By what percentage is it changing each year?





b)What is the percent change for Car B?






c)Whose percent change per year is greater, Car A or Car B?

Answers

I thinking that the answer is B.

Given m|n, find the value of x.
(8x-20)
(8x+8)

Answers

Answer:

x=12

Step-by-step explanation:

(8x-20)+(8x+8)=180

16x-12=180

16x=180+12

16x=192

x=12

Answer:

x = 12

Step-by-step explanation:

The given angles are supplementary. Therefore, they have a sum of 180°.

8x - 20 + 8x + 8 = 180

16x - 12 = 180

16x = 192

x = 12

Qualitative forecasting techniques should be applied in situations where time series data exists, but where conditions are expected to change.
A. True
B. False

Answers

Answer:

B. False

Step-by-step explanation:

HELPPPPPPPPPPPPPPPPPPPPPPP

Answers

false? i think? i’m so sorry if this is late or wrong

Which word begins with an open syllable?
silly
sister
sofa
softer

Answers

The word sofa begins with an open syllable.

Phonetics is the study of the sound of words/ speeches. This branch of linguistics deals with how words and letters sound and classifies them accordingly.

In phonetics, open and closed syllables refer to the specific nature of how the words end. This means that the words that end with a vowel are known as open syllables while the words that end with a consonant are known as closed syllables. Now, looking at the individual words given in the question, we can ascertain that the initial syllables of the words "silly, sister, softer" all ends in a consonant word. On the other hand, the word "sofa" begins with a vowel "o", thereby making it an open syllable.

The easiest way to detect an open and closed syllable is by identifying the position or use of the vowels and consonants in a syllable. This makes the word "sofa" an open syllable.

Learn more about open syllable here:

brainly.com/question/18046779

Which of the following is equivalent to f(x)?

Answers

Answer:

D. [tex]x^{-3/2}[/tex]

Step-by-step explanation:

Given function:

[tex]f(x) = \frac{1}{x\sqrt{x} }[/tex]

Equivalent expression is:

[tex]\frac{1}{x\sqrt{x} } = x^{-1}x^{-1/2} = x^{-1 - 1/2} = x^{-3/2}[/tex]

Correct choice is D

Calculate the distance between the points -8,2 and 3,2 on a coordinate plane

Answers

(-8,2)(3,2)

[tex]\\ \rm\Rrightarrow \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]

[tex]\\ \rm\Rrightarrow \sqrt{(3+8)^2+(2-2)^2}[/tex]

[tex]\\ \rm\Rrightarrow \sqrt{11^2}[/tex]

[tex]\\ \rm\Rrightarrow 11[/tex]

Find the distance of GF if G(9,1) and F (0,2)

Answers

Answer:

9.06 units

Step-by-step explanation:

The distance formula for points on a graph is basically the Pythagorean Theorem

√(x2 - x1)² + (y2 - y1)²

Plug in the values and you'll get √82, which equals about 9.05539, or 9.06

You have 2 tablets, one is labeled 0.15 mg and the other is labeled 0.3 mg. What is the total dosage of these tablets? a) 0.35 mg b) less than 0.35 mg c) more than 0.35 mg​

Answers

c) more than 0.35 mg


0.15
+0.30
0.45

3c = 2(c - 1)
How to write that as a verbal sentence

Answers

Answer:

3 times a value is equal to twice as much as it's predecessor.

I hate financial maths. 20 points!!!

Answers

According to the table,

• € 1 = R 12,75

• $ 1 = € 0,70

• $ 1 = R 8,89

Then

€ 250 × (R 12,75 / € 1) = R 3.187,5

$ 1300 × (€ 0,70 / $ 1) = € 910

$ 680 × (R 8,89 / $ 1) = R 6.045,2

If I ate 80 pieces of candy, how much candy would I have left if I ate 3/4 of the candy

Answers

Answer:

20

Step-by-step explanation:

Divide 80 by 4, get 20,

20 40 60 80

Step-by-step explanation:

[tex]thank \: you[/tex]

Find the total surface area.
A. 422 in²
B. 554 in²
C. 638 in²
D. 517 in²

Answers

Answer:

c

Step-by-step explanation:

you have to find the surface area of all sides. so (11*11)*2 and (11*9) *4 with this you get c. 638in square.

If you invested $7000 for 10 years at an annual interest rate of 3% how much is the accrued interest?

Answers

$9438 is your awnser

You are taking flying lessons to get a private pilot's license. The cost of the introductory lesson is 5/8 the cost of each additional lesson, which is $80. You have a total of $375 to spend on the flying lessons. How many lessons can you afford? How much money will you have left?

ANSWER:

Step-by-Step:​

Answers

Answer: 5 lessons with 5$ left over

Step-by-step explanation:

You can buy 5 lessons because 50 is 5/8 of 80, and 50 + 80 + 80 + 80 + 80 = 370

Pls solve it ! urgent plsss

Answers

That’s a test what grade is that

One airline carried 3,720 people on 31 flights between Portland and Los Angeles. If there were the same number on each flight, how many people were on each flight?
Please help ASAP!

Answers

Divide total people by total flights:

3720/31 = 120

There was 120 people on each flight

2.
It takes Troy 3 hours to mow his family's large lawn. With his little brother's help, he can
finish the job in only 2 hours. How long would it take the little brother to mow the entire
lawn alone ?
(A) 4 hr
(B) 5 hr
(C) 5.5 hr
(D) 6 hr
(E) 6.75 hr

Answers

Answer:

It takes four hours because the little bro is alone and only one lawn mower is used

Solve the equation

X/24 = 19



Answers

19 x 24 = 456
456/24 = 19
x = 456

Answer:

x = 456

Step-by-step explanation:

X/24 = 19

Multiply 24 by each side

X/24 * 24 = 19*24

x = 456

find the quotient of (6x^2+x-12)÷(2x+3)​

Answers

3x-4 is the quotient okkk

3x-4 is the answer to your question

A piece of string is 1650 cm long.
It is cut into two unequal pieces.
One piece is 150 cm longer than the other.
How long is the smaller piece?

Answers

Answer: The smaller piece is 750m long.

Step-by-step explanation:

let the smaller piece be x

so

150m + x + x = 1650

150 + 2x = 1650

or, 2x = 1500

so, x = 750 m

What is the distance between the points shown on the coordinate plane below? Round your answer to the nearest tenth. ​

Answers

The coordinates are (1,1) since it is below two and it is closest answer

1 Write the decimal equivalent for 6 3 Choose the correct answer below. 1 A. 6= 6.34 3 1 OB. 6-6.333333 63 OC. 69 = 6.33 D. 65 - 6.3 ​

Answers

Answer:

D

Step-by-step explanation:

The equation 6x + 5 = 5x + 11 +x-6 is true for all real numbers. Substitute a few real numbers for x to see that this is so and then try solving the equation. Describe
what happens.

Answers

Answer:

It will ALWAYS be true!

Step-by-step explanation:

Inputting any real or imaginary numbers such as i or e, (which are also known as complex numbers), and when put in the place of x will ALWAYS equal one another. You could put 1, 2, 3, etc. all the way up to infinity and still get the two equations equal to each other.

Hope this helped!

1. Dorothy was able to answer yes to 16/25 of the survey questions. What is 16/25
written as a decimal?

Answers

Answer:

16/25 as a decimal is 0.64

Step-by-step explanation:

What is the Answer to 50 + 10 x 0 + 7 + 2

Answers

using pemdas (parentheses, exponent, multiplication, division, addition, and subtraction):

first, we multiply 10 x 0 because m is before a which equals 0.

then, add in the order of the equation, 50 + 0 + 7 + 2 = 59

Arithmetic involves carrying out addition, subtraction, division and multiplication on numbers and expressions. The result of [tex]50 + 10 \times 0 + 7 + 2[/tex] is [tex]59[/tex]

Given that:

[tex]50 + 10 \times 0 + 7 + 2[/tex]

To do this, we apply BODMAS.

First, we evaluate all multiplication operations

[tex]50 + 10 \times 0 + 7 + 2 = 50 + 0 + 7 + 2[/tex]

Then evaluate all addition operations

[tex]50 + 10 \times 0 + 7 + 2 = 59[/tex]

Hence, the result of [tex]50 + 10 \times 0 + 7 + 2[/tex] is [tex]59[/tex]

Read more about arithmetic at:

https://brainly.com/question/17522487

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