What is the equation of a circle centered at the origin with radius 15 ?

Answers

Answer 1

The general form is x^2 + y^2 = r^2 where r = the radius of the circle. The radius is 15 so the equation is x^2 + y^2 = 15^2. That is x^2 + y^2 = 225.J

Related Questions

how many 3/8 are in 8?

Answers

Answer:

5? i think i got it wrong

Step-by-step explanation:

Answer:

21.333

Step-by-step explanation:

18 + 18 + 18 + 18 - 24 + 1 + 3 + 5 + 7 + 20 - 23 =?

Answers

Answer: 61

Step-by-step explanation:

Use addition to solve the equation.

18 + 18 + 18 + 18 - 24 + 1 + 3 + 5 + 7 + 20 - 23 = 61.

Answer:

Step-by-step explanation:

Which method would be best (quickest) for solving the system below:
3x - 4y = -2
y = 2x + 1

Answers

To solve with Elimination:

Write the equations under one another, like this:

2x - y = -1
+ 3x + 4y = 26

Ideally, we would like for one of the variables to be eliminated when we add vertically (straight down). But if we add them as they are this does not happen. We must manipulate one of the equations so that it will happen. Again, you can try to eliminate either x or y. I always look for a term that has a coefficient of 1 (or negative 1). So, let's use that y from the first equation again.

If the coefficient of the y in the other equation is POSITIVE 4, then I need the coefficient from the first equation to be its opposite, NEGATIVE 4. To do this, simply multiply the first equation by 4, this will create MAGIC!

4( 2x - y = -1)
+ 3x + 4y = 26

Be certain to Distribute across the entire first equation, so multiply all three terms by 4.

8x - 4y = -4
+ 3x + 4y = 26

Now add straight down (vertically). The y term will be eliminated.

11x = 22

Divide both sides of the equation by 11.

x = 2

Almost there! Now, substitute the 2 in for x in either of the original equations. Either one will work. I'm gonna use the second equation.

3x + 4y = 26

3(2) + 4y = 26

6 + 4y = 26

Subtract 6 from both sides of the equation.

4y = 20

Divide both sides of the equation by 4.

y = 5

That's it! There it is again. Put it all together. If x = 2 and y = 5, then the solution is the ordered pair, (2,5).

A ticket for a seat at a school play costs £2.95
There are 21 rows of seats.
There are 39 seats in each row.
The school will sell all the tickets.
Work out an estimate for the total money the school will get.

Answers

Answer:

Answer vary :

2.95(21 times 39) = $2,416.05

Step-by-step explanation:

honestly in my opinion that the answer. so we’re trying to find out how much money the school will earn.

if each seat cost 2.95 we need to find out how many seats are their?

-21 times 39 = 819

we multiplied the rows and seats find out how many seats their are and the answer is 819.

after you do that now we have to find out how much money they will earn from selling all 819 seats.

-819 times 2.95 = 2,416.05

we then multiplie all of the seats wich is 819 seats by 2.95 wich is the cost of one seat and got 2,416.05, and that’s the answer we’ve been looking for.

and that’s how I got my answer.

The total money school will get is £2416.05 on a play.

What is multiplication?

Multiplication is a mathematical arithmetic operation. It is also a process of adding the same types of expression for some number of times.

Example - 2 × 3 means 2 is added three times, or 3 is added 2 times.

Given:

A ticket for a seat at a school play costs £2.95

There are 21 rows of seats.

There are 39 seats in each row.

That means,

there are total 21 x 39 = 819 seats.

So, the total money the school will get,

= 819 x £2.95

= £2416.05

Therefore, school makes £2416.05 on a play.

To learn more about the multiplication;

https://brainly.com/question/19634536

#SPJ2

i need help i will get a zero if i dont

Answers

Answer:

You would multiply 7cm twice. and then multiuply 9 twice and then you add the two sums.

so 49 plus 81 is 130

so you have 130 cm.

Step-by-step explanation:

Hope this helps Im bad at math.

LAST PAGE!!! PLEASE HELP ME!! IL YOU GUYS SM!!! EXTRA POINTS BC THIS PAGE IS A DECENT AMOUNT OF WORK ∅-∅ ⊕-⊕ Ф-Ф

Answers

hope it's helpful ❤❤❤❤❤❤❤

THANK YOU.

HURRY I NEED HELP!!!
Distribute the expression
}(2n + 6 - 48y)

Answers

Answer:

2(n+3-24y)

Step-by-step explanation:

hope this helps!

Plz help me I will give brainliest

Answers

Answer:

it's the bottom one

Step-by-step explanation:

its D

Answer:

third one

Step-by-step explanation:

What do you get when you plug 4 in the following function?

Answers

Answer:

567

Step-by-step explanation:

It will become:

y = 7(3)^4

y = 7 * 81

y = 576

Answer:

Y = 567

Step-by-step explanation:

Y=7(3)(3)(3)(3)

If CDG ~ EDF, find the value of x.
2x+7
5x-2
48
40

Answers

Answer:

x=4

Step-by-step explanation:

48/5x-2 = 40/2x+7

48(2x+7) = 40(5x-2)

96x+336 = 200x-80

-96x -96x

336 = 104x-80

+80 +80

416/104 = 104x/104

x = 4

The value of x is equal to 4.

we have given that,

If CDG ~ EDF, find the value of x.

2x+7

5x-2

we have to determine the value of the x.

What is the similarity of the triangle?

Two triangles are similar if they have the same ratio of corresponding sides and equal pairs of corresponding angles.

48/5x-2 = 40/2x+7

48(2x+7) = 40(5x-2)

96x+336 = 200x-80

-96x -96x

336 = 104x-80

+80 +80

416/104 = 104x/104

x = 4

To learn more about a similar triangle visit:

https://brainly.com/question/2644832

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solve using a2 + b2 = c2
show ur work please :)

Answers

So 90^2+90^2=c^2
8100+8100=c^2
16200=c^2
C= ~127.28

Mayra bought x grams of rice.

Anika bought 5

more than Mayra bought.

Select ALL of the equations that represent the relationship

between the amount of rice that Mayra bought, x, and the

amount of rice that Anika bought, y.

(Select all that apply)

Answers

Answer:

[tex]y = 5 + x[/tex]

[tex]y - x = 5[/tex]

[tex]x = y - 5[/tex]

Step-by-step explanation:

No options were given but the question can still be solved

Given

From the first statement, we have:

[tex]Maria = x[/tex]

From the second, we have:

[tex]Anika = 5\ more[/tex]

Required

Determine the relationship between the amount of rice they bought

5 more means 5 + Maria.

So, [tex]Anika = 5\ more[/tex] becomes

[tex]Anika = 5 + Maria[/tex]

Substitute x for Maria

[tex]Anika = 5 + x[/tex]

For proper expression, let Anika be y

[tex]y = 5 + x[/tex]

Subtract x from both sides

[tex]y - x = 5[/tex]

Make x the subject

[tex]x = y - 5[/tex]

Identify the slope and y-intercept of the graph of the equation. y =3/5 x + 1

Answers

Answer:

slope = 3/5

y intercept = 1

Step-by-step explanation:

i think

Answer:

Slope: 3/5

Y-int: 1

Step-by-step explanation:

Slope intercept form is y=mx+b, with m being the slope being the y-int. So, m is 3/5 and b is 1 in the equation.

(hope this helps :P)

HELLLLLPPPPPPPPPPPPPPPp ASPAPppp plzzz

Answers

Step-by-step explanation:

2+b《3b.

hope u got it....

Answer:

2+b<3b

Step-by-step explanation:

sum means addition. so the sum of b and 2 would mean 2+b. triple the number b literally means b times 3. so, that is the answer.

Can somebody plz heLp answer number 7-8 thanks!!!

WILL MARK BRAINLIEST WHOEVER ANSWERS FIRST :DDD

Answers

Answer:

7. x - 16 = 5

x = 21

8. x ÷ 2 = 8

x = 16

good luck, i hope this helps :)

One of the legs of a right triangle measured 6 cm and the other leg measures 17cm. Find the measure of the hypotenuse. If necessary, round to the nearest tenth.

Answers

Answer:

don't no for the answer he app vapru naga he app bakwas ahe

The actual answer is 18.02 but since it has to be rounded to the nearest tenth, the final answer is c≈18

The slope of a line is -4, and the y-intercept is -3. What is the equation of the line written in slope-intercept form?

y = 4x - 3
y = -4x + 3
y = -4x - 3

Answers

The last one with both negatives

The answer is y= -4x - 3

what is 8.154 to 1 decimal place?

Answers

What is 8.154 rounded to 2 decimal places?" is the same as asking, "What is 8.154 rounded to two decimal points?" or "How to round 8.154 to two decimal places."

The main point is that you want to round 8.154 to two digits or places after the decimal point. Thus, we want to eliminate the last digit in 8.154. To eliminate the last digit in 8.154, we use the following Two Decimal Places Rules to get the answer:

Two Decimal Places Rule #1: If the last digit in 8.154 is less than 5, then remove the last digit.

Two Decimal Places Rule #2: If the last digit in 8.154 is 5 or more and the second to the last digit in 8.154 is less than 9, then remove the last digit and add 1 to the second to the last digit.

Let g(x) = 5x + 7. What is g(1)?

Answers

Step-by-step explanation:

given

g(x) = 5x + 7

g(1) = 5 * 1 + 7

= 5 + 7

= 12

Hope it will help :)

Answer:

Step-by-step explanation:

5 x 1=5

5+7=12

Hurry please It’s timed

Answers

Answer: could possibly be the fifth one and could also be the third

Step-by-step explanation: I’m not positive though

I believe it is the fifth one!

6 more than three times a number

Answers

Answer:

3x+6 is your expression.

Step-by-step explanation:

the answer is either 3x+6 or 6+3x

Help me asp please I need this answer within 5mins

Answers

B or d I’m not sure try for your self and hope this answer helps

B or D not sure what it is try it yourself

A car rental agency charges $40 per day for the first 7 days, and $35 a day for each day after that. How much would joe be charged if he rented a car for 10 days?

$415
$405
$395
$385
$375

Answers

Answer:

$385

Step-by-step explanation:

7x$40=280

3x$35=105

280+105=385

Answer:

$385

Step-by-step explanation:

If for the first seven days Joe has to pay $40, you would multiply that number by seven to get $280. However, he had the car for 3 extra days so you would multiply the additional cost of $35 per day by 3 to get $105. After that all you have to do is add $280+$105 to get a total of $385.

An older person is 8 yes older than seven times the age of a younger person. The sum of their ages is 32. What are their ages?

Answers

The answers are 3 and 29
Hope this helps if it does please consider making my answer brainliest

Which ordered pair is a solution of y > 5x-2?

(3,13)
(1,5)
(2,7)
(4,4)

Answers

lol

Step-by-step explanation:

In this expression what is the variable?
5x + 23

Answers

x is the variable :)

3. Diego measured the length of a pen to be 20 cm. The actual length of the pen is 22 cm.
Which of these is closest to the percent error for Diego's measurement?
A. 2%
B. 4.5%
C. 10%
D. 9%

Answers

D

22cm—>100%
2cm—->2x100\22=9.09%

Diego’s error was 2cm Which represents 9.09% of the actual length of the pen

A bicycle store costs $2600 per month to operate. The store pays an average of $60 per bike. The average selling price of each bicycle is $100. How many bicycles must the store sell each month to break even?

Answers

you should try dividing

They must sell 65 bicycles

Apply the distributive property to create an equivalent expression.

-9•(5j+k)

Answers

-45j+-9k
because -9 times 5j is -45j
and -9 times k is -9k

Please help!!! (i'll give brainliest to the best answer)

Answers

Answer:

i think it c since it is involving fractions

Step-by-step explanation:

Answer:

1. a. graphing method

2. b. substitution method

3. c. elimination method

Other Questions

Drag the tiles to the boxes to form correct pairs.What is the author's purpose of each paragraph in the address? Match the purpose to the correct paragraph number.Paragraph 3Paragraph 2Paragraph 4Paragraph 1PurposeParagraphto remind all Americans to stay engaged in the effort to securepeace and liberty worldwideto clarify that an end to the present world conflict can only comewith complete allied victoryto promise uninterrupted continuation of the previousadministration's duties and strugglesto warn that only the victors can dictate how peace is establishedand how justice is carried out (2+9)+3=_+8 fill the blank and choose the property of addition solve for p in the equation 2/5(15p +10)=40 Colin is writing an argument about comic books. Read the following claim:Reading comic books actually helps kids become better readers.Which of the following pieces of evidence supports Colins claim? Why? A. data from a graph that shows the increase in comic-book sales over a five-year period; it would show how much kids read comic books B. a brief story about how Colin had trouble falling asleep until he started reading old comic books he found in the basement; it would illustrate the benefits of reading comic books in Colins experience C. a quote from a reading teacher about how she has seen improvement in the test scores of kids who started reading comic books; this is an expert opinion about how reading comic books helped students reading D. a statement from the American Literature Coalition that says there is no noticeable increase in the reading-skill level of students who read comic books; this is information from an important group of experts on literature and reading PLEASE I WILL MARK BRANLIEST what are the two causes of national unity in Africa??? How much more paper is used for the label of the large can of tomato paste than for the label of the small can? Which of the following is a polynomial? The speed of a car in mph varies directly with the speed of a car in kph. The speed of 75mph is equivalent to 120 kph. How many kph is 45 mph?PLEASE HELP ME What causes warm air to rise?a. The fact that it's less dense than cold air.b. The fact that it weighs more than cold air.c. The fact that it has higher pressure than cold air.d. The fact that it's more dense than cold air. Mr. Hoskins uses an automatic bill payto pay his bills each month. The cablebill deducts $66.45 every month.How much will the cable bill deductionstotal for the year Either enter an exact answer in terms of . or use 3.14 for . 1.How do you think this proclamation was received by the Confederate states? The Unionstates? Arun's family took a road trip to Niagara Falls. Arun fell asleep 69% of the way through the trip. If Arun fell asleep after they had travelled 690 miles, what was the total length of the trip? whats the theme of borders by thomas king How do scientists forecast the weather? What is the value of n when n = -4? how to do this, any answers? one of the walls in megs bedroom is a square, 9 feet wide by 9ft tall. that wall has a square window that is 3ft wide and 3 ft tall. What is the area of the surface of the wall? explain how you found your anser. Where does the federal government get the power to amend the USC? 8) Name the relationship