How do you write an equation of a circle?

Answers

Answer 1

Step-by-step explanation:

The equation of a circle is:

(x-h)² + (y-k)² = r² where the center is at (h,k) and r is the radius.

so if you need the equation of a circle centered at (-3,5) and a radius of 7 would be:

(x+3)² + (y-5) = 49


Related Questions

If C = p - 1 and D = -3p + 1, find an expression that equals 3C – D in
standard form.

Answers

Answer:

3c=3p-3

3c-D=3p-3-(-3p+1)

=6p-4

the radius of a cylindrical water tank is 4ft, and it’s height is 10ft. What is the volume of the tank?

Answers

Answer:

[tex]volume = 502.4ft^3[/tex]

Step-by-step explanation:

[tex]volume = \pi r^2 h = 3.14 \times 4^2 \times 10 = 502.4ft^3[/tex]

Enter the value for x that makes the equation √x-7=-4

Answers

Answer:

Your answer is 9

Step-by-step explanation:

√9=3

3-7=-4

What is the correct ratio?

Answers

D)32/40

Hope it helps you

Answer:

[tex]\frac{24}{40}[/tex]

Step-by-step explanation:

Sin = [tex]\frac{opposite}{hypotenuse}[/tex] (relative to the angle asked for)

The opposite of Angle Z is 24

The hypotenuse no matter what would always be 40; therefore,

Sin(Z) = [tex]\frac{24}{40}[/tex]

Hope this helps!

HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP QUICKK

Answers

9514 1404 393

Answer:

  A.  The volumes are equivalent.

Step-by-step explanation:

The volume of a pyramid can be found using the formula ...

  V = 1/3Bh

where B is the base area, and h is the height.

Both of these pyramids have the same height, so we can compare volumes by looking at the base area.

Prism X has a rectangular base with an area of A = LW = (6 cm)(5 cm) = 30 cm². Prism Y has a triangular base with an area of A = 1/2bh = 1/2(7.5 cm)(8 cm) = 30 cm².

The two base areas are the same, so the volumes are the same.

In the number 3,941,608,572, which digit is in the hundred millions place?

Answers

Answer:

9

Step-by-step explanation:

A hundred millions is: 100,000,000

looking at the number the number in the place hundred millions place is 9, so the answer is 9.

Answer:900,000,000

The digit is 9

Step-by-step explanation:

Find the length of side x in simplest radical form with a rational denominator

Answers

Answer:

The answer is "[tex]\frac{7\sqrt{3}}{2}[/tex]"

Step-by-step explanation:

[tex]\to \sin 60^{\circ} = \frac{x}{7} \\\\\to x=\sin 60^{\circ} \times 7 \\\\\therefore \sin 60^{\circ} = \frac{\sqrt{3}}{2} \\\\\to x= \frac{\sqrt{3}}{2}\times 7 \\\\\to x= \frac{7\sqrt{3}}{2}[/tex]


Which is the most reasonable measure for the capacity of a bathtub?
O 5 liters
© 159 liters
O 159 milliliters
1000 milliliters

Answers

Answer is 159 litters

Please solve!
l = 48.1 m, w = 51.62 m, h = 3.42 m

Answers

Answer:

Volume? Surface area?

Step-by-step explanation:

Volume=8491.59

Surface area=5647.93

I need the answer fast pls

Answers

Answer:

B

Step-by-step explanation:

It's B because that's the only answer that talks about the highest temperature, which is mentioned in the question

The answer is B




Hope this helps

What is 6 1/3 yards in feet with explication

Answers

Answer:

6 1/3 yards = 19 feet

Step-by-step explanation:

1 yard = 3 feet

So we'll take the number of yards and multiply that by 3

6 yards x 3 feet/yard = 18 feet

for the 1/3 of a yard, you can either ask, "what's 1/3 of 3?" (= 1) or you can multiply 1/3 yard x 3 feet/yard = 1 foot.

Add up the parts, 18 + 1 = 19 feet

Please answer ASAP. I really need this and please explain your answer
No links

Answers

Answer:

144 - 36pi

Step-by-step explanation:

1) Since the side lengths of the square are 12 units, the midpoints divide each side into two 6 unit lengths.

2) Those 6 unit lengths are radii of a quarter of a circle.

3) We can use the equation pi × r^2 to calculate the area of the four quarter circles.

4) pi × 6^2

5) 36pi

6) The area of the original square is 12 × 12, which is 144.

7) 144 - 36pi is your answer.

Solve for x.
4x - 14
x + 85
x = [?]

Answers

Answer:

x = 33

Step-by-step explanation:

4x - 14  = x + 85

3x = 99

x = 99/3

x = 33

The length of one rectangle in a quilt is 6 inches. Its width is 3 inches. About how many of these rectangles do you need to cover an area of 7,500 square inches?

Answers

Step-by-step explanation:

Area=2(L+W)

A=2(6+3)

A=2(9)

A=18in²

therefore, 7500/18

=416.66in²

What is the value of 5/12+7/18?

Answers

Answer:

29/36

Step-by-step explanation:

So if im wrong i believe i did my math right

Answer:

i think the answer is 29/36

Step-by-step explanation:

What linear equation is represented by the table?

Please hurry!

Best answer gets Brainliest!!!!

A) Y= 2x

B) y= 4x

C) y= 4x -2

D) y= 2x - 2

Answers

Answer:

y = 4x - 2

Step-by-step explanation:

linear equation - y = mx + b

where m = slope and b = y intercept

The y intercept is the y value of the coordinate where x = 0

Looking at the table, we notice that when x = 0, y = -2

Which means that the y  intercept ( b ) = -2

Slope = change in y over change in x

As y goes up 4 x goes up 1

Thus, slope ( m ) =  4

Now we plug in the identified slope and y intercept into " y = mx + b "

we get that the equation is y = 4x - 2

A) Y=2x


Sorry if it’s incorrect but that is the answer I think is correct

Can some one please help me ?

Answers

9514 1404 393

Answer:

  a) 1/2

  b) 1/2

Step-by-step explanation:

a) The average rate of change is the slope of the segment whose end points are the ends of the interval. On the interval [2, 8] the average rate of change is ...

  m = (f(8) -f(2))/(8 -2) = (4 -1)/6 = 3/6 = 1/2

The average rate of change on the interval [2, 8] is 1/2.

__

b) In this context, "slope" and "average rate of change" mean the same thing. A line with the same slope will have a slope of 1/2.

Determine the rate of change of the function given by the table.
A) 2
B) 1
C) -1
D) -2

Answers

Hi! The answer is A.
All i did was

5-3=2
6-4=2
7-5=2
8-6=2

They all equal to 2 so the answer is 2 :)

The graph of the function f(x) = cos(x) is shown.

What is the range of the function?
A. [-3,3]
B. (-00, 00)
C. [-1, 1]
D. (0, 2m)

Answers

Answer:

C

Step-by-step explanation:

bottom to top

it goes from -1 to 1

The required range of the function y= cosx is [-1, 1]. Option C is correct.

From the graph range of the function y = cosx is to be determined.

What are functions?

Functions are the relationship between sets of values. e g y=f(x), for every value of x there is its exists in a set of y. x is independent while Y is the dependent variable.

What is range?

The range is defined as the difference between higher and lower values of y = f(x).

In a graph the value of y = f(x) = cosx is defined for every x of its domain (-∞, ∞) it varies from minimum -1 to maximum +1 on the y axis, so the range of the function is [ -1, 1].

Thus, the required range of the function y= cosx is [-1, 1]. Option C is correct.

Learn more about function here:

brainly.com/question/21145944

#SPJ5

explanation process with problem = branliest and more points

Answers

Answer:

B

Step-by-step explanation:

So, this is a inequality.

The inequality is 2x+2 >= 10

Lets completly ignore the graphs for the moment, and just solve this inequawlity as we would like a normal equation.

So first, subtract 2 from both sides:

2x+2>=10

=

2x>=8

Now, divide by 2 to get x alone:

2x>=8

=

x>=4

So, we now know that x is greater than or equal to 4.

In a normal inequality, we would have to remember the following:

When it is greater than/less than or equal to the dot that marks the inequalities value is filled in.

When it is greater than/less than the dot that marks the inequalities value is open, kind of like a "o".

Also, recall that the dark black line that goes either left or right of the dot also varies:

If x is less than the dot that marks the inequalities value, then the dark black line with go left.

If x is greater than the dot that marks the inequalities value, then the dark black lne will go right.

So for our x>=4, since there is a equals sign, its a filled in dot.

So four our x>=4, since there is a greater than sign, the dakr black lines goes to the right.

Now, lets look at the graphs

There is only one that has the filled in dot on 4, and a black line that goes to the right. Thats B

So B is your answer!

Hope this helps! :)

Answer:

B

Step-by-step explanation:

In order to graph we must first isolate the variable.

We can do this by using inverse operations

2x + 2 ≥ 10

To get rid of the + 2 we subtract 2 because the expression is adding 2 and the inverse of addition is subtraction. But remember whatever we do to one side we have to do to the other so we subtract 2 from each side

2 - 2 cancels out

10 - 2 = 8

we now have 2x ≥ 8

Now we want to get rid of the 2 on "2x". 2x is the same as 2 times x and the inverse of multiplication is division, so we divide each side by 2

2x / 2 = x

8 / 2 = 4

we're left with x ≥ 4

To graph we place a point on "4" and fill in the point ( when the inequality sign is ≤ or ≥ we fill in the point )

When the inequality sign is facing the variable ( x ) the line will be going in the direction of right.

Hence, the answer is B

Which Which value of x makes this equation true? -3x+10=5x-8

value of x makes this equation true? -3x+10=5x-8

Answers

Answer:

9/4

Step-by-step explanation:

-3x+10=5x-8

or, -3x-5x = -8-10

or, -8x=-18

or, 8x=18 (i.e. - is cancelled)

or, x=18/8

i.e. x=9/4

Hence, the value of x is 9/4

Answer:

The value of x is 9/4

Step-by-step explanation:

-3x+ 10 = 5x - 8

Add 3x both side

-3x + 3x + 10 = 5x + 3x - 8

10 = 8x - 8

Now, Add 8 both side

10 + 8 = 8x - 8 + 8

18 = 8x

8x = 18

Now, Divide by 8 from both side

8x/8 = 18/8

x = 9/4

Thus, The value of x is 9/4

FOR VERIFICATION ONLY:

-3x + 10 = 5x - 8

-3(9/4) + 10 = 5(9/4) - 8

-27/4 + 10 = 45/4 - 8

-27 + 4 × 10/4 = 45 - 8 × 4/4

-27 + 40/4 = 45 - 32/4

13/4 = 13/4

Hence, L.HS = R.H.S

-TheUnknownScientist

What is the distance between (-8,2) and (4,4)

Answers

Answer:

d = 2√3

Step-by-step explanation:

Rob can complete his bus route in 4 hours. Joan can complete her bus route in 3 hours. If they both left the terminal at 3:00 am and after each completed route returned to the terminal, determine the next time they would leave the terminal at the same time.

Answers

Answer:

3:00 pm

Step-by-step explanation:

Given

[tex]Rob = 4\ hrs[/tex]

[tex]Joan = 3\ hrs[/tex]

[tex]Start\ Time = 3:00\ am[/tex]

Required

The next time they leave at the same time

To do this, we first list out the multiples of 4 and 3 (i.e. their time of completing each route)

So, we have:

[tex]Rob: 4, 8, 12, 16, 20...[/tex]

[tex]Joan: 3,6,9,12,15,18....[/tex]

The least common multiple in the above is:

[tex]Least = 12hrs[/tex]

This means that they will meet at the terminal after 12 hours

So, their meeting time is:

[tex]Time = 3:00am + 12\ hrs[/tex]

[tex]Time = 3:00\ pm[/tex]

Stephen covered a 42.165 marathon in the first position . Round off this distance to two decimal places​

Answers

Answer:

42.17 maybe

Step-by-step explanation:

A theater company charges $7.50 per ticket for people of all age groups. If c represents the total number of children who bought tickets and a represents the total number of adults who bought tickets, which expression best represents the total money earned by the company from the sale of tickets. WITCH ONE

c + 7.5a

7.5(c + a)

15(c + a)

7.5c + a

Answers

Answer:

I believe it is 7.5c + a

Step-by-step explanation:

when a variable is placed beside a number, you will multiply the number by the variable. here, we know the the variable means kids. 7.5 per kid that buys tickets, plus the adults. Hope that helps!

Angle PKL and angle MKN are complementary angles. The measure of angle PKL is twice the measure of angle MKN.

a. Write one equation to find x,
b. What is the measure of angle MKN
c. Solve for x.

Answers

Answer:

∠MKN = 30°

Step-by-step explanation:

∠PKL = 2x

∠MKN = x

2x + x = 90

3x = 90

x = 30

∠MKN = 30°

The probability distribution for a
random variable x is given in the table.
х
-5
-3
-2
0
2
3
Probability
.17
:13
.33
.16
.11
.10
Find the probability that x<-3

Answers

Answer:  0.17

This is the probability that corresponds to x = -5, which is less than x = -3, and it's the only x value of the list smaller than -3. There's not much else to say about this.

If we wanted to find something like P(X < -2), then we would add up the probabilities for x = -5 and x = -3 to get 0.17+0.13 = 0.30

When 12 radios were left, how many hours had gone by?
Hellpp

Answers

12 hours.

If we look at the graph, we see that when there are 12 radios left, hours is equal to 12.

PLEASE HELP!

Find the x value.

Answers

Answer:

72

Step-by-step explanation:

every angle in a triangle adds up to 180

57 + 51 + x = 180

x = 72

Answer:

The answer to the question is:

x=72°

Step-by-step explanation:

The total angles of a triangle is 180°

x+51°+57°=180°

x+108°=180°

x=180°-108°

x=72°

Glven that (x + 2) Is a factor of the polynomial f(x) = x ^ 3 - 4x ^ 2 - 19x - 14 , factor completely

Answers

Answer:

Factors of the polynomial are (x+2) (x+1) (x-7)

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