What is the center of the circle x² + y2 - 4 = 0?

Answers

Answer 1

Answer:

(0,0)

Desmos graphing calculator is a great way to enter the formula of a circle and see a visual example.

Answer 2
Answer: (0,0)

Explanation: The equation for a circle is (x - h)^2 + (y - k)^2 = r^2, where (h,k) is the vertex and r is the radius. Rearranging the given equation, we have that x^2 + y^2 = 4. Therefore, the center of the circle is (0,0), and its radius is 2.

Related Questions

The height to the top of the
lightning rod on the Empire State
Building is 1,454 feet. Tricia has
a miniature replica that is 10
inches tall. The height of the
observation deck is 8.3 inches.
About how tall is the actual
observation deck?

Answers

200,836,937,908 Feet

Answer:

the answer 1,206.82

Step-by-step explanation:

Ill give brainliest

Describe a situation where you might need to know the percent that something changed.

Answers

Answer:

Change: subtract old value from new value. Example: You had 5 books, but now have 7. The change is: 7−5 = 2. Percentage Change is all about comparing old to new values.

Step-by-step explanation:

hope this helps :)

Answer:

When finding the climate of an area

Step-by-step explanation:

Ex. Rainfall increased 30% since 2019 in florida (not true just an example)

A line passes through the points (-8, 7) and (-11,-11). Find the value of a such 1 point
that the point (-7,a) lies on the line. a=
Your answer

Answers

Answer:

a=12

Step-by-step explanation:

we need the slope of this line. Find it with the slope formula

m= y2-y1 / x2-x1    with the points given p1=(-8,7)  and p2=(-11,-11)

m=-11-7 / -11-(-8)                                               (x1,y1)               (x2,y2)  

m= -18 /-11+8

m= -18 / - 3

m= 6

next plug in one of the point into the point-slope formula [y-y1=m(x-x1)]

y-7=6(x-(-8))  ( simplify this towards the slope intercept form [y=mx+b]

y-6=6(x+8)

y-6=6x+48

y=6x+54

now we can plug in our point of (-7,a) to find what a is

a=6(-7)+54

a=-42+54

a=12

:)

PLEASE HELP ME BRAINLY IF CORRECT
Two hot air balloons are traveling along the same path away from a town,
beginning from different locations at the same time. Henry's balloon begins
10 miles from the town and is 24 miles from the town after 2 hours. The
distance of Tasha's balloon from the town is represented by the function y=
6x + 15.
Which balloon was farther from the town at the beginning, and which traveled
more quickly?

A. Tasha's balloon was farther from the town at the beginning, but
Henry's balloon traveled more quickly.
B. Henry's balloon was farther from the town at the beginning, but
Tasha's balloon traveled more quickly.
C. Tasha's balloon was farther from the town at the beginning, and it
traveled more quickly.
D. Henry's balloon was farther from the town at the beginning, and it
traveled more quickly.

Answers

Answer:

Henry's balloon was farther from the town at the beginning and Henry's balloon traveled more quickly.

Need help with this one

Answers

Answer:

3/2 and 2/3

Step-by-step explanation:

Scale Factor = Image / object

You can take either of the three sides so as far as it corresponds with the side of the other triangle

Let's take longest sides

= 15/10 = 3/2 That's scale Factor from Triangle PQR to STU

The second question is the reverse of the first one

= 10/15 = 2/3

The same applies to when you use the other sides of the triangles.

Gimme something to put in Goo gle translate (inna different language d u h)​​

Answers

Answer:

Խնդրում եմ, տվեք ինձ ամենախելամիտը

Step-by-step explanation:

At the market you can buy 6 bags of apples for$31.02. At the orchard you can get 5 bags of apples for $25.40. Which is the better deal​

Answers

Market: $31.02/6 bags of apples
Orchard: $25.40/5 bags of apples

Market: $5.17/bag of apples
Orchard: $5.08/bag of apples

So, in conclusion, the apples at the orchard have a better deal than the apples at the market by $0.09.

Have a great day and also, can you please mark my answer as the brainliest answer?
Thanks.

Buying bags of apples from orchard will be the better deal.

What is unit price?

Unit price cab be found by using formula ,dividing the total price by the price of of one quantity.

Formula used for finding unit price

[tex]price of one item=\frac{total price }{total number of items}[/tex]

According to the given question

At the market:

Cost of 6bags of apples=$31.02

⇒ Cost of 1bag of apples [tex]=\frac{31.05}{6} =5.17[/tex]

At the orchard:

Cost of 5bags of apples =$25.40

⇒ Cost of 1bag of apples=[tex]\frac{25.40}{5}[/tex]=$5.08

Therefore, unit price of a bag of apples from orchard  is less as compared to the bag of apples from market.

Hence, buying bags of apples from orchard will be the better deal as compared to the buying bags of apples from market.

Learn more about the Unit Price here:

https://brainly.com/question/10706678

#SPJ2

determine value o and a
how did you get this answer
what relationships did you use

Answers

Answer:

theta is 78 degrees, alpha is 85 degrees

Step-by-step explanation:

use the parallel lines

alternate interior angles means that theta + 112 = 180

and since the alternate interior of the 85 degree angle is a vrtical angle of alpha, they are equal

Could you write 9 inches and 180 as a ratio?

Answers

Answer:

9:120 but if simplified 1:20

Step-by-step explanation:

I hope this helps

Given the explicit formula an = 125 + 18(n - 1), find the 49th term.

Answers

125+ 18( 49-1 )
=125 + 18( 48)
=125 +864
=989
The 49th term is 989

If a necklace has a 10% increase so its £154 pound what was the price before the increase.

Answers

Ugh hdxurzyePyeztowT us

Mai skated x miles, and Clare skated ⅗ farther than that. Write an expression for the distance Clare skated.

Answers

Answer:

Its either 8x/5 or 5x/8

im not sure sorry.

Understanding Exponents -
HELP ME ASAP!!!
I’m not good at this stuff

Answers

Answer:

4+4+4

Step-by-step explanation:

ok so 4^3 is essentially saying 4x4x4  and 4 x 4^2 is saying 4 x 4 x 4 which is the same as 4x4x4. it is all multiplying the number 4 by itself 3 times if you try and do all three of those you will get the same answer which is 64. However if you add 4+4+4 you will get 12. I hope that makes some sense

35% of 15 is what number

Answers

Answer: 5.25

Step-by-step explanation: .35*15=5.25

Answer:

5.25

Step-by-step explanation:

change the percent to a decimal by moving the dot to the left two places, then multiply it by the number

0.35*15=5.25

The perimeters of the triangles shown are equal. Find the side lengths of each triangle.

Answers

Answer:

type the variable of that segment into the boxes correspondingly

Step-by-step explanation:

Write the compound inequality: " A number n is less than or equal to -7 or greater than 12

Answers

Let the number be n, then -1<3n+5<38 or -1≤3n+5≤38 depending on what is meant by “between”. We’ll assume the former.

-1<3n+5<38, subtract 5 throughout: -6<3n<33, divide through by 3: -2<n<11, shows the number to be in the range (-2,11) or possibly [-2,11].

Sam runs 6 miles in 45 minutes. At the same rate, how many minutes would he take to run 4 miles?

Answers

Answer:

It would be 30 mph

Step-by-step explanation:

45/6=7.5

7.5*4=30

Answer:

30 minutes

Step-by-step explanation:

Each mile takes him 7 minutes 30 seconds. So you will do 7.5 x 4 to get 30 minutes

TV repairmen charge 35 dollars for a house call and then 15 per hour what would be the charge after 4 and a half hours?

Answers

Answer:

$102.50

Step-by-step explanation:

The formula here would be x=35+15y, y being the number of hours he was there.

So 35+15(4.5)=102.5, or $102.50.

Answer:

$102.50

Step-by-step explanation:

35 + 15+15+15+15=95 then you break 15 into two comes out 7.50 which then makes your total $102.50

Which fractions are equivalent to 2/12 + 4/12

Answers

Answer:

1/6 + 2/6 or 1/6 + 1/3 there are infinite numbers of answers but im assuming you want to simplify

Step-by-step explanation:

A rectangular fish tank has a base that is 9 inches
by 8 inches. How much water will it take to fill the
tank to a depth of 10 inches?

Answers

V=8*7*5= 280 in^3 of water

What is the highest common factor of 45 and 315?

Answers

The highest common factor is 45

The GCF of 45 and 315 is 45. So before conformation of my answer refer to your math teacher .

can someone answer my newest question please will give brainly

Answers

Answer:

yes if you give me brainliest

Step-by-step explanation:

12x 5 =(4x 2 )(C)12, x, start superscript, 5, end superscript, equals, left parenthesis, 4, x, squared, right parenthesis, left parenthesis, C, right parenthesis C=

Answers

Answer:

3x³

Step-by-step explanation:

Given the expression

12x^5 =(4x^2 )(C)

We are to find the value of C

Rewriting the equation will give;

(4×3)x²•x³ = 4x²C

4x²•3x³ = 4x²C

Divide both sides by 4x²

4x²•3x³/4x² = 4x²C/4x²

3x³= C

Hence the function C is 3x³

Find the measure of angle A

Answers

Answer:

it is 60 of right angle

Step-by-step explanation:

there

4x+5+13x+90=180
17x+95=180
17x=85
x=5

what is everyones favorite UNDERTALE character

Answers

Answer:

flowey the flower (aka: Asriel Dreamer)

Step-by-step explanation:

Answer:

papyrus flowery

Step-by-step explanation:

Tell whether a rigid motion can move the solid figure onto the dashed figure. If so, describe the transformation(s) that you can use. If not explain why the figures are not congruent.

Answers

Answer:a rotation of 90° followed by a reflection over the y-axis

Step-by-step explanation:

Which of these is the best estimate four 370% of 30?

Answers

Answer:

greater than 3·30

370%=3.7

3.7×30= 111

3×30=90

111>90

I hope this helps:

(23 – 136) - 45 + 32 +8
What the answer

Answers

Answer:

-118

Step-by-step explanation:

A musical instrument has a pitch of 220 hertz when the wavelength is 3 feet. When the wavelength is 4 feet, the pitch is 165 hertz.

Answers

Answer:

239

Step-by-step explanation:

its 231 and its that i promise

PLEASE HELP ASAP!!

The graph represents which system of inequalities?

A.) y<=-2x+3
y<=x+3

B.) y>=-2x+3
y>=x+3

C.) y<=-3x+2
y<=-x+2

D.)y>-2x+3
y>x+3

Answers

Answer:

Its the yellow area

Step-by-step explanation:

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