The cost of the circular carpet, $C, varies as the square of the radius,
r metres. If C = 200 when r= 2
Find the cost of the circular carpet when r= 3

Answers

Answer 1

Answer:

$450

Step-by-step explanation:

C = k[tex]r^{2}[/tex]

200 = k([tex]2^{2}[/tex]) = 4k

k = 50

C = 50[tex]r^{2}[/tex] = 50([tex]3^{2}[/tex]) = 50(9) = $450


Related Questions

please help i don't know what I'm doing ​

Answers

Answer:

11 is the answer

Step-by-step explanation:

Answer:

11

Step-by-step explanation:

to find one of the addend

subtract another one of the addend by the sum

eg : 9 + __= 20

20 - 9 = 11

now we can check

9 + 11 = 20

hope this helps

thanks bye

Can someone help and explain what the student did wrong and what the correct answer is

Answers

Answer: (x-6)(x+4)

Step-by-step explanation:

So firstly everything in the table is correct however this isn't the way to factor this equation. The way I use is if the what multiplies to get the third number(-24) and what adds to get the second number (-2) so the numbers 6 and 4 work but now we have to look at our signs (positive/negative). So lets look at the students answer (x+6)(x-4) although 6*-4= -24 if you add 6 and -4 you get 2 which doesn't equal -2. So the factor answer should be

(x-6)(x+4)

because -6 times 4= -24(third number) and -6 plus 4= -2(second number)

Please help me quickly

Answers

Step-by-step explanation:

5: -7=x,-1=y so (-7,-1)

6. 7=x,8=y so (7,8)

Hope that helps :)

What is the area of a circle with a diameter of 4

Answers

Answer:

12.57

Step-by-step explanation:

Answer:

I think its 12.56637.

Use this tax table to find how much tax you need to pay on a taxable income of $40,000.
If taxable
But not
The tax ls:
income is over- ovCr
SO
$7,825
10 percent of the
amount over SO
S7,825
$31,850
$782.50 plus 15 percent
of the amount over
7,825
$31,850
$77,100
$4,386.25 plus 25
percent of the amount
over 31,850
$77,100
$160,850 $15,698.75 plus 28
percent of the amount
over 77,100
$160,850
$349,700 $39,148.75 plus 33
percent of the amount
over 160,850
$349,700
no limit
$101,469.25 plus 35
percent of the amount
over 349,7

Answers

9514 1404 393

Answer:

  $6,423.75

Step-by-step explanation:

The table tells you ...

If the amount is over 31,850 but not over 77,100 the tax is 4386.25 +25% of (40,000 -31,850).

So, the tax is ...

  $4,386.25 + 0.25(40,000 -31,850) = $4,386.25 + 0.25(8,150)

  = $4,386.25 +2,037.50 = $6,423.75

From her home, Glera traveled 5.8 miles north to the grocery stare, then 2.1 mlles west to the library. What is the distance thom her home to the library

Answers

Answer:

6.16 miles

Step-by-step explanation:

When solving word problems like these, I like to start by drawing a picture.

So, Glera starts at her home and moves north by 5.8 miles. Then, she walks west by 2.1 miles to the library. The problem wants you to find the distance from her home to the library.

I've attached a drawing I made to help me visualize the problem. The distance from her home to the library is the hypotenuse of the triangle. To solve for it, you would use the equation [tex]a^{2}[/tex] + [tex]b^{2}[/tex] = [tex]c^{2}[/tex].

a and b are the sides of the triangle, and c is the hypotenuse.

[tex]5.8^{2}[/tex]  + [tex]2.1^{2}[/tex] = [tex]c^{2}[/tex]

33.64 + 4.41 = [tex]c^{2}[/tex]

38.05 = [tex]c^{2}[/tex]

To find c, you would take the square root of 38.05, which is about 6.16 if you use a calculator.

So, the distance from her home to the library is 6.16 miles!

find the volume of the sphere​

Answers

Answer:

113.04 units³

Step-by-step explanation:

Given that

radius (r) = 3 unitsπ value = 3.14

Therefore the

Volume of sphere =

4/3 × π × r × r × r=

4/3 × 3.14 × 3 × 3 × 3 =

4/3 × 3.14 × 27 =

36 × 3.14 =

113.04 units³

_________________

#StayPositive - kexcvi

take 4/3 of pi times radius cubed

Need help with this please will give you the brainliest

Answers

Answer:

5m

Step-by-step explanation:

The volume doesnt count so do height × width

Answer:

SA = 50

Step-by-step explanation:

Formula for surface area of a rectangular prism : A=2(wl+hl+hw)  

hope this helps :)

If gorge had a gf for 4 mo. then on their 5 mo he dumped her. how long did gorge have a gf?​

Answers

Answer:

For 4 months. Also, is this a real life problem that happened to you??

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

Tom had 216 marbles. First, he divided them into 3 equal groups. Then he put two groups into a 2 separate bags. He took the remaining group of marbles and shared it equally with his 3 friends. How many marbles did each of his friends get ?

Answers

Answer: each of his friends got 24 marbles

Step-by-step explanation:

216 / 3 = 72

72 / 3 = 24

Hola buenas noches,me podría ayudar a resulver este problema por favor, mañana lo entregare temprano.por favor​

Answers

Answer:

x=56.666666666666

Step-by-step explanation:

x+2x+10=180

-10 -10

x+2x=170

3x=170

3. 3

x=56.666666666666

In three days, the chickens on Nigel's farm can lay 33 eggs. How many eggs will they lay in 11 days?

Answers

Answer:

Eggs laid by chicken in 11 days = 121 eggs

Step-by-step explanation:

Eggs laid by the chickens in 3 days = 33

Average rate at which the chickens are laying the eggs = [tex]\frac{33}{3}[/tex]

                                                                                             = 11 eggs per day

At the same rate number of eggs laid by the chickens in 11 days = Rate × Number of days

= 11 × 11

= 121 eggs

Therefore, eggs laid by chicken in 11 days = 121 eggs

Using the graph, predict the y-value when the x-value is 13


A) 17
B) 18
C) 19
D) 20

Answers

9514 1404 393

Answer:

  D)  20

Step-by-step explanation:

Each point marked on the graph is 3 units higher and 2 units to the right of the one before. The last dot is at x=9, so a dot at x=13 will be 2×2=4 units to the right. At the same rate of increase, it will be 2×3=6 units higher than 14.

The y-value is predicted to be 20 at x=13.

30. Write and solve an equation for the
following situation:
Marshall earns a salary of $36,000, and each
year he receives a $4,000 raise. Jim earns a
salary of $51,000, and each year he receives
o $1,500 raise. How many years will it take
before Marshall and Jim earn the same
salary?
Equation:
Volue of x:

Answers

Answer:

equation: 36000 + 4000x = 51000 + 1500x

value of x: 6

Step-by-step explanation:

Marshall:

36000 + 4000x

Jim:

51000 + 1500x

36000 + 4000x = 51000 + 1500x

360 + 40x = 510 + 15x

25x = 150

x = 6

Answer:

equation: 36000 + 4000x = 51000 + 1500x

value of x: 6

wich value from the set ( 0, 1/2, 2, 4) makes the equation 6-4x=4 true

Answers

Answer:

1/2

Step-by-step explanation:

6 - 4(0) = 6 (incorrect answer)

6 - 4(1/2) = 4 (correct answer)

6 - 4(2) = -2 (incorrect answer)

6 - 4(4) = -10 (incorrect answer)

I hope this helps :)

what if we are given 7:11? Can we write 2 equivalent ratios?​

Answers

Answer:

yes we can write as follows :-

14:22

21:33

28:44

hope it helps

HELP ASAP PLEASE EXPLAIN THOUGH

Answers

Answer:

35 times, or D

Step-by-step explanation:

A bag contains 5 red marbles, 6 blue marbles, 3 green marbles, 4 black marbles, and 2 yellow marbles. A marble will be drawn from the bag and replaced 100 times. What is a reasonable prediction for the number of times a green or black marble will be drawn?

A quick lesson on probability:

The probability of an event is: (the number of ways what you want can happen) / (total number of outcomes possible). For example, in a coin flip, there is 1 way to get heads, and 2 possible outcomes. Thus, the possiblity  of flipping a coin and getting heads is:

(1 way to get heads) / (2 possible outcomes) = 1/2

Then, if we were to flip the coin 100 times, we would expect about 1/2 of the times to be heads, so we should expect heads 50 times.  

On to the problem.

There are 3 green marbles and 4 black marbles, so there are 7 ways to draw a green or black marble.

Then, there are 5 + 6 + 3 + 4 + 2 = 20 possible outcomes.

Using the formula to find the probability, substitute the values we just found.

(the number of ways what you want can happen) / (total number of outcomes possible) =

(7 ways to draw a green or black marble) / (20 marbles that can be drawn) = 7/20 chance of getting a green or black marble.

Then, because there is a 7/20 chance of getting what we want, and there are 100 draws, we can say that an we should get green or black

7/20 * 100 = 35 times, or D

Feel free to ask any questions! :)

A large group of friends needs to call a taxi service to get home. The taxi cab company charges $2 per mile

Answers

Answer:

36 dollars per person and they all will pay 2 dollars each the large group will hit a wall

Levi has a collection of 120 coins. How many coins represent 20% of his collection?

Answers

24 would be the answer to this question. Hope this helps. Can I have brainliest. Please?!

which 2 or 3 are they pls help

Answers

The answer is B.

z x 1 = z

z x 0.37 = 0.37z

= z + 0.37z

:)

The answer is B I think!

can anyone please help thank yall so much!!​

Answers

Answer: 1.No, 2.Yes, 3.No, 4.22, 25, 28, 5.-29, -34, -39, 6. 9/10, 1, 1 and 1/10,  For the last three you are on your own. Good luck :)

Step-by-step explanation:

Is this linear or nonlinear?
y + 7 = 2x + 3

Answers

Answer:

I think it is tho

let's wait for another answer

it’s linear .

EXPLANATION-

Now use the length of the vertical line segment and the horizontal line segment to find the distance between G and H. Substitute these values in the equation for the Pythagorean Theorem.

Answers

Answer:

please first tell me the numbers written

Triangles 2.0........

Answers

15 cm
N=2m so 3m=1.5n then we can plug in that to get 1.5n+5=n+8 to get the value of n then we do our magic and get n=6 n+9 is 15 and it’s the same length as TU

Answer:

triangle STU and WEK are CONGRUENT

ST=WK SIDE OF A CONGRUENT TRAINGLE ARE EQUAL

2M=N.....1

SU=WE

3M+5=N+8

3M+5=2M+8

3M-2M=8-5

M=3

NOW

N=2M=2×3=6CM

TU=WK=N=6CM.

Weekly wages at a
certain factory are
normally distributed with a mean of
$400 and a standard deviation of $50.
Find the probability that a worker
selected at random makes between
$250 and $300.

Answers

Answer:

2.35% chance

Step-by-step explanation:

in a normally distributed graph with a standard deviation of $50 $250 and $300 contain 2.35% of the data.  

2.15% chance.

in a normally distributed graph with a standard deviation of $50 $250 and $300 contain 2.15% of the data.  

How do you calculate probability?

The probability of an event can be calculated by the probability formula by simply dividing the favorable number of outcomes by the total number of possible outcomes.

Please check the attached file for a complete answer.

Learn more about probability at

https://brainly.com/question/24756209

#SPJ2

A right triangle has one side that measures 4 in. The angle opposite that side measures 80o.

What is the length of the hypotenuse of the triangle? Round to the nearest tenth.

3.9 in.
4.1 in.
22.7 in.
23.0 in.

Answers

4.1 I GOTCHU BESTIEEEEEE

Answer:

The answer is option B. 4.1 !

Step-by-step explanation:

Hop this helps :)

Brainliest would be greatly appreciated :D

a man gives 40 percent of his money to his children and 20% of the remaining to a trust if we still left with 9600 what did he originally have ​

Answers

Answer:

20000

Step-by-step explanation:

9600 = 80% after he gave 40% to his children

80%=4/5

9600 / 4 * 5 = 12000

12000 = 60% of the original

60%=3/5

12000 / 3 * 5 = 20000

Which is a true statement about the transformation shown?

Answers

Answer:

A

Step-by-step explanation:

It's not a reflection because then it would be flipped and M and N would switch places

It's a translation and everything is the same length in terms of each other so

A translation with the pre and after image being congruent

Choice A

Nb gn njjrndndnfnfjdjfjfi

Answers

Answer:

jkbgf7jhfdt7jceru9onvdtihdr

pweeez help me :3
How long does it take for the ball to reach its maximum height (or its vertex)?
A. 4 seconds
B. 2.5 seconds
C. 0.6 seconds
D. 2 seconds

Answers

Answer:

The vertex, (1.5, 40), tells us that it takes 1.5 seconds for the ball to reach its maximum height of 40 feet.

Step-by-step explanation:

...i think..

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