Mathematics High School

What happens to the area of a circle if the circumference is doubled?
A. The area is 1/2 of the original circle
B. The area is the same as the original circle
C. The area is 2 times the original circle
D. The area is 4 times the original circle
E. The area is 8 times the original circle

Answers

Answer 1

Answer:

D. The area is 4 times the original circle

Step-by-step explanation:

The circumference:

C = 2πr

If the circumference is doubled, it means the radius is doubled.

The area:

A = πr²

And the new area:

A1 = π(2r)² = 4πr² = 4A

Correct choice is D

Answer 2

Answer:

Solution given:

area of a circle[A]=πr²

circumference of circle [C]=2πr

when circumference of circle is doubled

it becomes :4πr

Step-by-step explanation:

area directly proportional to circumference

πr²=2πr

when circumference is doubled

πr²=2(2πr)

so area

C. The area is 2 times the original circle

Related Questions

Which of the following properties can be used to show that the expression 4^5/3 is equivalent to 3 square root 4^5

Answers

Answer:B

Step-by-step explanation:

solve the equation-4(x+10)-6=-3(x-2)
​

Answers

Answer:

x = -52

Step-by-step explanation:

-4x-46+46=-3x+6+46

-4x=-3x+52

-4x+3x=-3x+52+3x

Answer:

[tex] - 4(x + 10) - 6 = - 3(x - 2) \\ - 4x - 40 - 6 = - 3x + 6 \\ - x - 52 = 0 \\ x = - 52[/tex]

A 6-pound bag of almonds contains 48 servings. How many servings would a 48-ounce bag of almonds contain

Answers

Answer:

24 servings

Step-by-step explanation:

6 pounds = 96 ounces

96/48 = 48/x

x = 24

If p and q vary inversely and p is 26 when q is 9, determine q when p is equal to 18.

Answers

Answer:

q = 13

Step-by-step explanation:

p and q vary inversely:

p = k/q

If p = 26, q = 9, find k:

26 = k/9k = 26*9 = 234

The equation is:

p = 234/q

When p = 18, q is:

18 = 234/qq = 234/18q = 13

Which is a multiple of 10?
30 25 15 0​

Answers

Answer:

30 is the multiple of 10.

Answer:

30

Step-by-step explanation:

Multiples of 10 would include:

10

20

30

40

50

and so on...

(09.01 MC)

In circle A shown below, the measure of ∠BAD is 148°:



Circle A with angle BAD measuring 148 degrees; points B, C, D lie on Circle A.

If mArc BC is 102°, what is mArc CD? (3 points)

Group of answer choices

74°

46°

96°

148°

Answers

it is 46 for m Arc CD

The angle of the arc CD is equal to 46°

Data;

arc m<BD = 148°arc m<BC = 102°arc m<CD = ?

Length of an Arc

In most case, when presented with a problem involving an arc in a circle, we often use the formula of length of an arc. But in this case, the we can simply find the arc CD by just subtracting the arc BC from the bigger arc.

[tex]< CD = < BD - < BC\\ < CD = 148 - 102\\ < CD = 46^0[/tex]

The angle of the arc CD is equal to 46°

Learn more on length of an arc here;

https://brainly.com/question/8177962

Deborah had 3 1/4 yards of ribbon she used 3/8 of a yard for a project how much ribbon does she have left

Answers

She would have 2.875 yards left
Deborah has 2 7/8 yards of ribbon left

Martha Washington Elementary School has a right triangular playground. There are swings at point A, a slide at point B, and a jungle gym at point C.
It is 60 feet between the slide and the jungle gym. Find the distance between the jungle gym and the swings.

Answers

60+90=180

=150

180-150

= -30

brainyest pls

The distance of the jungle gym to swing is 120 feet.

We have given that the diagram

we have to find the distance between jungle gym and swings is,

What is the formula for 30-60-90 theorem?

suppose that x is shorter length then the hypotenuse is 2x and  [tex]x\sqrt{3}[/tex]

is the longer length

By using the Pythagoras formula we have

The length of CA is,

[tex]CA=60(2)=120[/tex]

Therefore the distance of the jungle gym to swing is 120 feet.

To learn more about the right angle triangle visit:

https://brainly.com/question/343682

Please help!

Jackie purchases 100 bracelets from a wholesaler at $10 each and the cost totals $1,000. If
Jackie does a markup of 40%, what will the markup amount be? What will the price of each
bracelet be?

Answers

Using proportions, it is found that:

The markup amount is of $400.The price of each bracelet is of $14.

What is a proportion?

A proportion is a fraction of a total amount.

In this problem, the markup is of 40% over an amount of $1000, hence:

0.4 x $1000 = $400.

Considering the markup, 100 bracelets will be sold for $1,400, hence, the price of each bracelet will be given by:

$1,400/100 = $14.

More can be learned about proportions at https://brainly.com/question/24372153

sumbody help please . no links or files

Answers

Answer:

144

Step-by-step explanation:

I will  explain later kinda busy

6x4x12=288

288/2 (because it is a triangle and triangles are half of squares)

An expression is shown below.


What is the value of the expression?

Answers

Answer:

1/12

Step-by-step explanation:

1) covert 1/2 to 3/6 to subtract 2/6 from it. this gets 2/6, which simplifies to 1/3

2) divide 1/3 by 4 which gets 1/12

3÷2 x + 8 =1 giving brainest​

Answers

Answer:

x = -6

Step-by-step explanation:

3/2x + 8 = -1

3/2x = -9

x = -9 x 2/3

x = -6

Hope that helps! A Brainliest would be appreciated! :)

<3 Cin

(rcostheta = 6) convert to rectangular

Answers

x = 6, representing the straight line parallel to y-axis at a distance 6 units from the axis

x = r cos
θ
.


I don’t understand how to find the answer to this problem!

Answers

Answer:

By using pythagoras theorem the problem can be solved;

(hypotenuse)^2=(pythagoras)^2+(base)^2

h^2=(20 mi)^2+(40 mi)^2

h^2=(400+1600) mi^2

h^2=2000 mi^2

h=√2000 mi^2

h=20√5 mi

Jackson said that he made a triangle that had side lengths of 6 units, 6 units and 14 units. Is this a possible triangle?

Answers

Answer:

The triangle will not be possible.

this is because two side lengths can't expand 14 units.

in order for the triangle to work, the sum of the two short side lengths must be greater than the longer side.

however, 6+6 does not equal 14 it equals 12 this means that the triangle is not possible

Step-by-step explanation:

A dilation of (x, y) → (0.75x, 0.75y) is applied to a triangle. The resulting image coordinates are at (−3, −3), (3, 3), and (−2, −3). Which of the following could be a coordinate of the original figure?


(−1,−1)

(−4,−4)

(−1.5,−2.25)

(2.7,4)

Answers

Answer:

the third one

Step-by-step explanation:

3

Answer:

The third one

Step-by-step explanation:

3

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HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP


Answers

Answer:

C

Step-by-step explanation:

The rest are correlation


You flip a coin 13 times. What is the probability that you get at most 3 heads? Enter your answer as a
fraction in simplest form.

Answers

Answer:

About 23%

Step-by-step explanation:

Do 23% × 13, and it show about 3 as the answer.

Please help solve correctly. NO links or files. Correct answers only if not report. I will even give an additional 10 if correct.

Answers

Answer:

226.19

Step-by-step explanation:

Find the missing side.

Need help please. Need explanation, please.

Answers

This is basic trigonometry. First use SOH CAH TOA. Now look, you are finding opposite and adjacent so you use tangent. Now heres the equation - x/11 = tan48 now isolate the x. 11(tan48) = x.
Now plug into calculator and you get 12.2167

Answer:

x ≈ 12.22

Step-by-step explanation:

SOH CAH TOA(Tangent = opposite side/adjacent side)

tan (48°) = x/11

=> x = tan (48°) × 11

=> x ≈ 12.22

I rlly need help with this

Answers

You need to give more info so like show more of the question

We Need more info ok

Which of the following is a true statement about functions?
O A. If A and B are matrices, then AB = BA.
B. If fand g are functions, then (f+g)(x) = (8+)(x).
C. If fand g are functions, then (fºg)() = (8 ©f(x).
O D. If fis a function, then Ma+h) =f(a)+fh).

Answers

I think the answer is A

Subtract the sum of the three lowest numbers from the sum of the three highest numbers.
11 36 7 38 3 45
39 10 48 37 12 36

The answer is supposed to be 104, I need the steps to show how the answer is 104.

Answers

Answer:

112

Step-by-step explanation:

Put the data in the ascending order:

3, 7, 10, 11, 12, 36, 36, 37, 38, 39, 45, 48

Sum the 3 lowest numbers:

3 + 7 + 10 = 20

Sum the 3 highest numbers:

39 + 45 + 48 = 132

Subtract the sums:

132 - 20 = 112

explain why 2^0 is equal to 1.

Answers

Answer and Step-by-step explanation:

Anything that is to the power of 0 is equal to 1. This is why 2 to the power of 0 is equal to 0.

0 is the only number such that for any number x, x + 0 = x. So, the reason that any number to the zero power is one is because any number to the zero power is just the product of no numbers at all, which is the multiplicative identity, 1.

#teamtrees #PAW (Plant And Water)

Answer:

Step-by-step explanation:

multiply by 2^x

[tex]2^0 \times 2^x=2^{0+x}=2^x\\[/tex]

when you multiply any number by 1 ,you get the same number.

here when you multiply 2^x by 2^0 ,you get 2^x

Hence 2^0=1

Which expression is equivalent to (x^-6/x^2)^3?

Answers

Answer:

1                    

------

x24

hope it helps have a great day bye

Step-by-step explanation:

in the diagram below, the measure of angle W is 5 times as large as the measure of angle X. what is the measure of angle W?

Answers

Answer:

D.   150°

Step-by-step explanation:

∠X and ∠W are supplementary

Let a = m∠X

Then 5a = m∠W

m∠X + m∠W = 180

a + 5a = 180

6a = 180

a = 30

m∠W = 5a = 5(30) = 150°

Out of 400 people sampled, 368 had kids. Based on this, construct a 95% confidence interval for the true
population proportion of people with kids.
Give your answers as decimals, to three places

Answers

Answer:8.7

Step-by-step explanation:

Find the volume of the pyramid

Answers

12 times 9 is 108 since you can do 9 and 7 which is 63

please help! ASAP!!!!

Answers

Answer:

Part A)  2(n/6) - 9

Part B)  the expression would change to 2(n/6) + 9 if  it said 'more than'

Step-by-step explanation:

what is another way to write 15 divided by 2

A: 2/15

B 15/2

C 15+2

D 15x2

Answers

The correct answer is B 15/2
b

step by step explanation:
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